82472977 has 6 divisors (see below), whose sum is σ = 87042498. Its totient is φ = 78131952.

The previous prime is 82472969. The next prime is 82472981. The reversal of 82472977 is 77927428.

It can be written as a sum of positive squares in only one way, i.e., 60980481 + 21492496 = 7809^2 + 4636^2 .

It is not a de Polignac number, because 82472977 - 2³ = 82472969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82472987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113868 + ... + 114589.

It is an arithmetic number, because the mean of its divisors is an integer number (14507083).

Almost surely, 2^82472977 is an apocalyptic number.

It is an amenable number.

82472977 is a deficient number, since it is larger than the sum of its proper divisors (4569521).

82472977 is a wasteful number, since it uses less digits than its factorization.

82472977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228495 (or 228476 counting only the distinct ones).

The product of its digits is 395136, while the sum is 46.

The square root of 82472977 is about 9081.4633732675. The cubic root of 82472977 is about 435.2818484350.

The spelling of 82472977 in words is "eighty-two million, four hundred seventy-two thousand, nine hundred seventy-seven".