78899516 has 12 divisors (see below), whose sum is σ = 146196288. Its totient is φ = 37129152.

The previous prime is 78899501. The next prime is 78899521. The reversal of 78899516 is 61599887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580076 + ... + 580211.

It is an arithmetic number, because the mean of its divisors is an integer number (12183024).

Almost surely, 2^78899516 is an apocalyptic number.

It is an amenable number.

78899516 is a deficient number, since it is larger than the sum of its proper divisors (67296772).

78899516 is a wasteful number, since it uses less digits than its factorization.

78899516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160308 (or 1160306 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 53.

The square root of 78899516 is about 8882.5399520633. The cubic root of 78899516 is about 428.9020411230.

The spelling of 78899516 in words is "seventy-eight million, eight hundred ninety-nine thousand, five hundred sixteen".