78980612 has 6 divisors (see below), whose sum is σ = 138216078. Its totient is φ = 39490304.

The previous prime is 78980611. The next prime is 78980651. The reversal of 78980612 is 21608987.

It can be written as a sum of positive squares in only one way, i.e., 48664576 + 30316036 = 6976^2 + 5506^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78980612.

It is not an unprimeable number, because it can be changed into a prime (78980611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9872573 + ... + 9872580.

It is an arithmetic number, because the mean of its divisors is an integer number (23036013).

Almost surely, 2^78980612 is an apocalyptic number.

It is an amenable number.

78980612 is a deficient number, since it is larger than the sum of its proper divisors (59235466).

78980612 is a wasteful number, since it uses less digits than its factorization.

78980612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19745157 (or 19745155 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 78980612 is about 8887.1036901794. The cubic root of 78980612 is about 429.0489382213.

The spelling of 78980612 in words is "seventy-eight million, nine hundred eighty thousand, six hundred twelve".