78606992 has 10 divisors (see below), whose sum is σ = 152301078. Its totient is φ = 39303488.

The previous prime is 78606989. The next prime is 78607007. The reversal of 78606992 is 29960687.

It can be written as a sum of positive squares in only one way, i.e., 55413136 + 23193856 = 7444^2 + 4816^2 .

It is a pancake number, because a pancake can be divided into 78606992 parts by 12538 straight cuts.

It is an unprimeable number.

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, 2456453 + ... + 2456484.

Almost surely, 2^78606992 is an apocalyptic number.

It is an amenable number.

78606992 is a deficient number, since it is larger than the sum of its proper divisors (73694086).

78606992 is a wasteful number, since it uses less digits than its factorization.

78606992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912945 (or 4912939 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 78606992 is about 8866.0584252530. The cubic root of 78606992 is about 428.3713259293.

The spelling of 78606992 in words is "seventy-eight million, six hundred six thousand, nine hundred ninety-two".