78791604 has 12 divisors (see below), whose sum is σ = 183847104. Its totient is φ = 26263864.

The previous prime is 78791593. The next prime is 78791621. The reversal of 78791604 is 40619787.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3282972 + ... + 3282995.

It is an arithmetic number, because the mean of its divisors is an integer number (15320592).

Almost surely, 2^78791604 is an apocalyptic number.

It is an amenable number.

78791604 is an abundant number, since it is smaller than the sum of its proper divisors (105055500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78791604 is a wasteful number, since it uses less digits than its factorization.

78791604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6565974 (or 6565972 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 78791604 is about 8876.4634849697. The cubic root of 78791604 is about 428.7064134166.

The spelling of 78791604 in words is "seventy-eight million, seven hundred ninety-one thousand, six hundred four".