78461612 has 24 divisors (see below), whose sum is σ = 141220800. Its totient is φ = 38124800.

The previous prime is 78461611. The next prime is 78461639. The reversal of 78461612 is 21616487.

It is not an unprimeable number, because it can be changed into a prime (78461611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26612 + ... + 29412.

It is an arithmetic number, because the mean of its divisors is an integer number (5884200).

Almost surely, 2^78461612 is an apocalyptic number.

It is an amenable number.

78461612 is a deficient number, since it is larger than the sum of its proper divisors (62759188).

78461612 is a wasteful number, since it uses less digits than its factorization.

78461612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001 (or 2999 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 78461612 is about 8857.8559482529. The cubic root of 78461612 is about 428.1070786325.

The spelling of 78461612 in words is "seventy-eight million, four hundred sixty-one thousand, six hundred twelve".