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69896761 = 116354251
BaseRepresentation
bin1000010101010…
…00101000111001
311212112010022221
410022220220321
5120343144021
610534044041
71506053434
oct412505071
9155463287
1069896761
1136500520
121b4a9621
131163383c
1493d681b
15620a241
hex42a8a39

69896761 has 4 divisors (see below), whose sum is σ = 76251024. Its totient is φ = 63542500.

The previous prime is 69896719. The next prime is 69896767. The reversal of 69896761 is 16769896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69896761 - 27 = 69896633 is a prime.

It is a super-2 number, since 2×698967612 = 9771114396582242, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69896699 and 69896708.

It is not an unprimeable number, because it can be changed into a prime (69896767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3177115 + ... + 3177136.

It is an arithmetic number, because the mean of its divisors is an integer number (19062756).

Almost surely, 269896761 is an apocalyptic number.

It is an amenable number.

69896761 is a deficient number, since it is larger than the sum of its proper divisors (6354263).

69896761 is a wasteful number, since it uses less digits than its factorization.

69896761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6354262.

The product of its digits is 979776, while the sum is 52.

The square root of 69896761 is about 8360.4282785034. The cubic root of 69896761 is about 411.9258220212.

The spelling of 69896761 in words is "sixty-nine million, eight hundred ninety-six thousand, seven hundred sixty-one".

Divisors: 1 11 6354251 69896761