82791077 has 4 divisors (see below), whose sum is σ = 83030016. Its totient is φ = 82552140.

The previous prime is 82791073. The next prime is 82791097. The reversal of 82791077 is 77019728.

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 not a de Polignac number, because 82791077 - 2² = 82791073 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 (82791073) 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, 118949 + ... + 119642.

It is an arithmetic number, because the mean of its divisors is an integer number (20757504).

Almost surely, 2^82791077 is an apocalyptic number.

It is an amenable number.

82791077 is a deficient number, since it is larger than the sum of its proper divisors (238939).

82791077 is a wasteful number, since it uses less digits than its factorization.

82791077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238938.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 82791077 is about 9098.9602153213. The cubic root of 82791077 is about 435.8407608734.

The spelling of 82791077 in words is "eighty-two million, seven hundred ninety-one thousand, seventy-seven".