78655004 has 12 divisors (see below), whose sum is σ = 137847528. Its totient is φ = 39270000.

The previous prime is 78655001. The next prime is 78655013. The reversal of 78655004 is 40055687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78655001) 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, 11222 + ... + 16829.

It is an arithmetic number, because the mean of its divisors is an integer number (11487294).

Almost surely, 2^78655004 is an apocalyptic number.

It is an amenable number.

78655004 is a deficient number, since it is larger than the sum of its proper divisors (59192524).

78655004 is a wasteful number, since it uses less digits than its factorization.

78655004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28756 (or 28754 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 78655004 is about 8868.7656412829. The cubic root of 78655004 is about 428.4585224906.

The spelling of 78655004 in words is "seventy-eight million, six hundred fifty-five thousand, four".