80713644 has 24 divisors (see below), whose sum is σ = 205453248. Its totient is φ = 24458640.

The previous prime is 80713643. The next prime is 80713649. The reversal of 80713644 is 44631708.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (80713643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305602 + ... + 305865.

It is an arithmetic number, because the mean of its divisors is an integer number (8560552).

Almost surely, 2^80713644 is an apocalyptic number.

It is an amenable number.

80713644 is an abundant number, since it is smaller than the sum of its proper divisors (124739604).

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

80713644 is a wasteful number, since it uses less digits than its factorization.

80713644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611485 (or 611483 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 80713644 is about 8984.0772481096. The cubic root of 80713644 is about 432.1643964506.

The spelling of 80713644 in words is "eighty million, seven hundred thirteen thousand, six hundred forty-four".