78677612 has 18 divisors (see below), whose sum is σ = 149093028. Its totient is φ = 36312432.

The previous prime is 78677611. The next prime is 78677629. The reversal of 78677612 is 21677687.

It is not an unprimeable number, because it can be changed into a prime (78677611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57518 + ... + 58869.

It is an arithmetic number, because the mean of its divisors is an integer number (8282946).

Almost surely, 2^78677612 is an apocalyptic number.

It is an amenable number.

78677612 is a deficient number, since it is larger than the sum of its proper divisors (70415416).

78677612 is a wasteful number, since it uses less digits than its factorization.

78677612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116417 (or 116402 counting only the distinct ones).

The product of its digits is 197568, while the sum is 44.

The square root of 78677612 is about 8870.0401351967. The cubic root of 78677612 is about 428.4995695181.

The spelling of 78677612 in words is "seventy-eight million, six hundred seventy-seven thousand, six hundred twelve".