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69794057 = 531316869
BaseRepresentation
bin1000010100011…
…11100100001001
311212022220110002
410022033210021
5120331402212
610531532345
71505145134
oct412174411
9155286402
1069794057
1136440343
121b45a0b5
13115c8b78
1493ab21b
1561d9ac2
hex428f909

69794057 has 4 divisors (see below), whose sum is σ = 71110980. Its totient is φ = 68477136.

The previous prime is 69794047. The next prime is 69794063. The reversal of 69794057 is 75049796.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41267776 + 28526281 = 6424^2 + 5341^2 .

It is a cyclic number.

It is not a de Polignac number, because 69794057 - 216 = 69728521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69794047) 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, 658382 + ... + 658487.

It is an arithmetic number, because the mean of its divisors is an integer number (17777745).

Almost surely, 269794057 is an apocalyptic number.

It is an amenable number.

69794057 is a deficient number, since it is larger than the sum of its proper divisors (1316923).

69794057 is a wasteful number, since it uses less digits than its factorization.

69794057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316922.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 69794057 is about 8354.2837514655. The cubic root of 69794057 is about 411.7239663740.

The spelling of 69794057 in words is "sixty-nine million, seven hundred ninety-four thousand, fifty-seven".

Divisors: 1 53 1316869 69794057