76644036 has 96 divisors (see below), whose sum is σ = 231840000. Its totient is φ = 21887712.

The previous prime is 76644023. The next prime is 76644037. The reversal of 76644036 is 63044667.

76644036 is a `hidden beast` number, since 7 + 6 + 644 + 0 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (76644037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36010 + ... + 38078.

It is an arithmetic number, because the mean of its divisors is an integer number (2415000).

Almost surely, 2^76644036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76644036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115920000).

76644036 is an abundant number, since it is smaller than the sum of its proper divisors (155195964).

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

76644036 is a wasteful number, since it uses less digits than its factorization.

76644036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 76644036 is about 8754.6579601947. The cubic root of 76644036 is about 424.7754957297.

The spelling of 76644036 in words is "seventy-six million, six hundred forty-four thousand, thirty-six".