77612344 has 64 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 34406400.

The previous prime is 77612333. The next prime is 77612351. The reversal of 77612344 is 44321677.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172632 + ... + 173080.

It is an arithmetic number, because the mean of its divisors is an integer number (2551500).

Almost surely, 2^77612344 is an apocalyptic number.

It is an amenable number.

77612344 is an abundant number, since it is smaller than the sum of its proper divisors (85683656).

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

77612344 is a wasteful number, since it uses less digits than its factorization.

77612344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 540 counting only the distinct ones).

The product of its digits is 28224, while the sum is 34.

The square root of 77612344 is about 8809.7868305652. The cubic root of 77612344 is about 426.5568624774.

The spelling of 77612344 in words is "seventy-seven million, six hundred twelve thousand, three hundred forty-four".