78607988 has 12 divisors (see below), whose sum is σ = 140919492. Its totient is φ = 38345280.

The previous prime is 78607981. The next prime is 78607993. The reversal of 78607988 is 88970687.

It can be written as a sum of positive squares in 2 ways, for example, as 19963024 + 58644964 = 4468^2 + 7658^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78607981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239495 + ... + 239822.

It is an arithmetic number, because the mean of its divisors is an integer number (11743291).

Almost surely, 2^78607988 is an apocalyptic number.

It is an amenable number.

78607988 is a deficient number, since it is larger than the sum of its proper divisors (62311504).

78607988 is a wasteful number, since it uses less digits than its factorization.

78607988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479362 (or 479360 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 78607988 is about 8866.1145943418. The cubic root of 78607988 is about 428.3731351663.

The spelling of 78607988 in words is "seventy-eight million, six hundred seven thousand, nine hundred eighty-eight".