82566966 has 16 divisors (see below), whose sum is σ = 168974784. Its totient is φ = 26882184.

The previous prime is 82566961. The next prime is 82566983. The reversal of 82566966 is 66966528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82566961) 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, 159756 + ... + 160271.

It is an arithmetic number, because the mean of its divisors is an integer number (10560924).

Almost surely, 2^82566966 is an apocalyptic number.

82566966 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

82566966 is an abundant number, since it is smaller than the sum of its proper divisors (86407818).

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

82566966 is a wasteful number, since it uses less digits than its factorization.

82566966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320075.

The product of its digits is 933120, while the sum is 48.

The square root of 82566966 is about 9086.6366715083. The cubic root of 82566966 is about 435.4471396431.

The spelling of 82566966 in words is "eighty-two million, five hundred sixty-six thousand, nine hundred sixty-six".