78659265 has 16 divisors (see below), whose sum is σ = 126000000. Its totient is φ = 41903232.

The previous prime is 78659263. The next prime is 78659291. The reversal of 78659265 is 56295687.

It is a happy number.

It is not a de Polignac number, because 78659265 - 2¹ = 78659263 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78659263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13236 + ... + 18234.

It is an arithmetic number, because the mean of its divisors is an integer number (7875000).

Almost surely, 2^78659265 is an apocalyptic number.

It is an amenable number.

78659265 is a deficient number, since it is larger than the sum of its proper divisors (47340735).

78659265 is a wasteful number, since it uses less digits than its factorization.

78659265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6056.

The product of its digits is 907200, while the sum is 48.

The square root of 78659265 is about 8869.0058631168. The cubic root of 78659265 is about 428.4662593529.

The spelling of 78659265 in words is "seventy-eight million, six hundred fifty-nine thousand, two hundred sixty-five".