82642977 has 16 divisors (see below), whose sum is σ = 123626880. Its totient is φ = 54558576.

The previous prime is 82642969. The next prime is 82642981. The reversal of 82642977 is 77924628.

It is not a de Polignac number, because 82642977 - 2³ = 82642969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82642907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12078 + ... + 17639.

It is an arithmetic number, because the mean of its divisors is an integer number (7726680).

Almost surely, 2^82642977 is an apocalyptic number.

It is an amenable number.

82642977 is a deficient number, since it is larger than the sum of its proper divisors (40983903).

82642977 is a wasteful number, since it uses less digits than its factorization.

82642977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29829 (or 29823 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 82642977 is about 9090.8182800010. The cubic root of 82642977 is about 435.5807226099.

The spelling of 82642977 in words is "eighty-two million, six hundred forty-two thousand, nine hundred seventy-seven".