78674685 has 16 divisors (see below), whose sum is σ = 126052224. Its totient is φ = 41902272.

The previous prime is 78674669. The next prime is 78674719. The reversal of 78674685 is 58647687.

It is not a de Polignac number, because 78674685 - 2⁴ = 78674669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9159 + ... + 15531.

It is an arithmetic number, because the mean of its divisors is an integer number (7878264).

Almost surely, 2^78674685 is an apocalyptic number.

It is an amenable number.

78674685 is a deficient number, since it is larger than the sum of its proper divisors (47377539).

78674685 is a wasteful number, since it uses less digits than its factorization.

78674685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7204.

The product of its digits is 2257920, while the sum is 51.

The square root of 78674685 is about 8869.8751400457. The cubic root of 78674685 is about 428.4942557075.

The spelling of 78674685 in words is "seventy-eight million, six hundred seventy-four thousand, six hundred eighty-five".