82277564 has 12 divisors (see below), whose sum is σ = 144232704. Its totient is φ = 41068224.

The previous prime is 82277561. The next prime is 82277599. The reversal of 82277564 is 46577228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82277561) 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, 14972 + ... + 19715.

It is an arithmetic number, because the mean of its divisors is an integer number (12019392).

Almost surely, 2^82277564 is an apocalyptic number.

It is an amenable number.

82277564 is a deficient number, since it is larger than the sum of its proper divisors (61955140).

82277564 is a wasteful number, since it uses less digits than its factorization.

82277564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35284 (or 35282 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 82277564 is about 9070.6980988235. The cubic root of 82277564 is about 434.9377882582.

The spelling of 82277564 in words is "eighty-two million, two hundred seventy-seven thousand, five hundred sixty-four".