85178816 has 28 divisors (see below), whose sum is σ = 169499280. Its totient is φ = 42470400.

The previous prime is 85178777. The next prime is 85178839. The reversal of 85178816 is 61887158.

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, 24005 + ... + 27323.

Almost surely, 2^85178816 is an apocalyptic number.

It is an amenable number.

85178816 is a deficient number, since it is larger than the sum of its proper divisors (84320464).

85178816 is a wasteful number, since it uses less digits than its factorization.

85178816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732 (or 3722 counting only the distinct ones).

The product of its digits is 107520, while the sum is 44.

The square root of 85178816 is about 9229.2370215528. The cubic root of 85178816 is about 439.9910741991.

The spelling of 85178816 in words is "eighty-five million, one hundred seventy-eight thousand, eight hundred sixteen".