78610900 has 18 divisors (see below), whose sum is σ = 170585870. Its totient is φ = 31444320.

The previous prime is 78610897. The next prime is 78610901. The reversal of 78610900 is 901687.

It can be written as a sum of positive squares in 3 ways, for example, as 853776 + 77757124 = 924^2 + 8818^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78610901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392955 + ... + 393154.

Almost surely, 2^78610900 is an apocalyptic number.

It is an amenable number.

78610900 is an abundant number, since it is smaller than the sum of its proper divisors (91974970).

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

78610900 is a wasteful number, since it uses less digits than its factorization.

78610900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786123 (or 786116 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 78610900 is about 8866.2788135722. The cubic root of 78610900 is about 428.3784247355.

The spelling of 78610900 in words is "seventy-eight million, six hundred ten thousand, nine hundred".