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68464193 = 79780599
BaseRepresentation
bin1000001010010…
…10111001000001
311202211100012212
410011022321001
5120011323233
610443231505
71460636030
oct405127101
9152740185
1068464193
1135712186
121ab18595
1311251775
149142717
156025a48
hex414ae41

68464193 has 4 divisors (see below), whose sum is σ = 78244800. Its totient is φ = 58683588.

The previous prime is 68464189. The next prime is 68464199. The reversal of 68464193 is 39146486.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39146486 = 219573243.

It is a cyclic number.

It is not a de Polignac number, because 68464193 - 22 = 68464189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68464193.

It is not an unprimeable number, because it can be changed into a prime (68464199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4890293 + ... + 4890306.

It is an arithmetic number, because the mean of its divisors is an integer number (19561200).

Almost surely, 268464193 is an apocalyptic number.

It is an amenable number.

68464193 is a deficient number, since it is larger than the sum of its proper divisors (9780607).

68464193 is an equidigital number, since it uses as much as digits as its factorization.

68464193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9780606.

The product of its digits is 124416, while the sum is 41.

The square root of 68464193 is about 8274.3092158802. The cubic root of 68464193 is about 409.0921674230.

The spelling of 68464193 in words is "sixty-eight million, four hundred sixty-four thousand, one hundred ninety-three".

Divisors: 1 7 9780599 68464193