78704812 has 6 divisors (see below), whose sum is σ = 137733428. Its totient is φ = 39352404.

The previous prime is 78704807. The next prime is 78704819. The reversal of 78704812 is 21840787.

It is not an unprimeable number, because it can be changed into a prime (78704819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9838098 + ... + 9838105.

Almost surely, 2^78704812 is an apocalyptic number.

It is an amenable number.

78704812 is a deficient number, since it is larger than the sum of its proper divisors (59028616).

78704812 is a wasteful number, since it uses less digits than its factorization.

78704812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19676207 (or 19676205 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 78704812 is about 8871.5732539387. The cubic root of 78704812 is about 428.5489433494.

The spelling of 78704812 in words is "seventy-eight million, seven hundred four thousand, eight hundred twelve".