78487604 has 12 divisors (see below), whose sum is σ = 147919044. Its totient is φ = 36225024.

The previous prime is 78487561. The next prime is 78487609. The reversal of 78487604 is 40678487.

It can be written as a sum of positive squares in 2 ways, for example, as 36626704 + 41860900 = 6052^2 + 6470^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78487609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754637 + ... + 754740.

It is an arithmetic number, because the mean of its divisors is an integer number (12326587).

Almost surely, 2^78487604 is an apocalyptic number.

It is an amenable number.

78487604 is a deficient number, since it is larger than the sum of its proper divisors (69431440).

78487604 is a wasteful number, since it uses less digits than its factorization.

78487604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509394 (or 1509392 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 78487604 is about 8859.3229989656. The cubic root of 78487604 is about 428.1543464637.

It can be divided in two parts, 784 and 87604, that added together give a palindrome (88388).

The spelling of 78487604 in words is "seventy-eight million, four hundred eighty-seven thousand, six hundred four".