82563816 has 32 divisors (see below), whose sum is σ = 217274400. Its totient is φ = 26072640.

The previous prime is 82563809. The next prime is 82563823. The reversal of 82563816 is 61836528.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82563809) and next prime (82563823).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90075 + ... + 90986.

It is an arithmetic number, because the mean of its divisors is an integer number (6789825).

Almost surely, 2^82563816 is an apocalyptic number.

It is an amenable number.

82563816 is an abundant number, since it is smaller than the sum of its proper divisors (134710584).

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

82563816 is a wasteful number, since it uses less digits than its factorization.

82563816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181089 (or 181085 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 82563816 is about 9086.4633383952. The cubic root of 82563816 is about 435.4416020131.

The spelling of 82563816 in words is "eighty-two million, five hundred sixty-three thousand, eight hundred sixteen".