77633612 has 12 divisors (see below), whose sum is σ = 155267280. Its totient is φ = 33271536.

The previous prime is 77633587. The next prime is 77633627. The reversal of 77633612 is 21633677.

It is a happy number.

77633612 is an admirable 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, 1386287 + ... + 1386342.

It is an arithmetic number, because the mean of its divisors is an integer number (12938940).

Almost surely, 2^77633612 is an apocalyptic number.

It is an amenable number.

77633612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77633612 is a wasteful number, since it uses less digits than its factorization.

77633612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772640 (or 2772638 counting only the distinct ones).

The product of its digits is 31752, while the sum is 35.

The square root of 77633612 is about 8810.9938145478. The cubic root of 77633612 is about 426.5958218420.

The spelling of 77633612 in words is "seventy-seven million, six hundred thirty-three thousand, six hundred twelve".