77059644 has 12 divisors (see below), whose sum is σ = 179805864. Its totient is φ = 25686544.

The previous prime is 77059643. The next prime is 77059673. The reversal of 77059644 is 44695077.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 77059596 and 77059605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77059643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3210807 + ... + 3210830.

It is an arithmetic number, because the mean of its divisors is an integer number (14983822).

Almost surely, 2^77059644 is an apocalyptic number.

It is an amenable number.

77059644 is an abundant number, since it is smaller than the sum of its proper divisors (102746220).

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

77059644 is a wasteful number, since it uses less digits than its factorization.

77059644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421644 (or 6421642 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 77059644 is about 8778.3622618345. The cubic root of 77059644 is about 425.5419043579.

The spelling of 77059644 in words is "seventy-seven million, fifty-nine thousand, six hundred forty-four".