78104965 has 16 divisors (see below), whose sum is σ = 99371520. Its totient is φ = 58829760.

The previous prime is 78104927. The next prime is 78104969. The reversal of 78104965 is 56940187.

It is a de Polignac number, because none of the positive numbers 2^k-78104965 is a prime.

It is a super-2 number, since 2×78104965² = 12200771115302450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78104969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075 + ... + 12544.

It is an arithmetic number, because the mean of its divisors is an integer number (6210720).

Almost surely, 2^78104965 is an apocalyptic number.

It is an amenable number.

78104965 is a deficient number, since it is larger than the sum of its proper divisors (21266555).

78104965 is a wasteful number, since it uses less digits than its factorization.

78104965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13692.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 78104965 is about 8837.7013414123. The cubic root of 78104965 is about 427.4574402189.

The spelling of 78104965 in words is "seventy-eight million, one hundred four thousand, nine hundred sixty-five".