78610512 has 20 divisors (see below), whose sum is σ = 203077280. Its totient is φ = 26203488.

The previous prime is 78610487. The next prime is 78610523. The reversal of 78610512 is 21501687.

It is a super-2 number, since 2×78610512² = 12359225193804288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78610512.

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, 818812 + ... + 818907.

It is an arithmetic number, because the mean of its divisors is an integer number (10153864).

Almost surely, 2^78610512 is an apocalyptic number.

It is an amenable number.

78610512 is an abundant number, since it is smaller than the sum of its proper divisors (124466768).

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

78610512 is a wasteful number, since it uses less digits than its factorization.

78610512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637730 (or 1637724 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 78610512 is about 8866.2569328889. The cubic root of 78610512 is about 428.3777199515.

The spelling of 78610512 in words is "seventy-eight million, six hundred ten thousand, five hundred twelve".