82642877 has 4 divisors (see below), whose sum is σ = 82873440. Its totient is φ = 82412316.

The previous prime is 82642871. The next prime is 82642897. The reversal of 82642877 is 77824628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82642877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82642871) 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, 114743 + ... + 115460.

It is an arithmetic number, because the mean of its divisors is an integer number (20718360).

Almost surely, 2^82642877 is an apocalyptic number.

It is an amenable number.

82642877 is a deficient number, since it is larger than the sum of its proper divisors (230563).

82642877 is a wasteful number, since it uses less digits than its factorization.

82642877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230562.

The product of its digits is 301056, while the sum is 44.

The square root of 82642877 is about 9090.8127799444. The cubic root of 82642877 is about 435.5805469221.

The spelling of 82642877 in words is "eighty-two million, six hundred forty-two thousand, eight hundred seventy-seven".