78562964 has 6 divisors (see below), whose sum is σ = 137485194. Its totient is φ = 39281480.

The previous prime is 78562961. The next prime is 78562987. The reversal of 78562964 is 46926587.

It can be written as a sum of positive squares in only one way, i.e., 68194564 + 10368400 = 8258^2 + 3220^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78562961) 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 as a sum of consecutive naturals, namely, 9820367 + ... + 9820374.

It is an arithmetic number, because the mean of its divisors is an integer number (22914199).

Almost surely, 2^78562964 is an apocalyptic number.

It is an amenable number.

78562964 is a deficient number, since it is larger than the sum of its proper divisors (58922230).

78562964 is a wasteful number, since it uses less digits than its factorization.

78562964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19640745 (or 19640743 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 78562964 is about 8863.5751251964. The cubic root of 78562964 is about 428.2913336598.

The spelling of 78562964 in words is "seventy-eight million, five hundred sixty-two thousand, nine hundred sixty-four".