82774697 has 4 divisors (see below), whose sum is σ = 87131280. Its totient is φ = 78418116.

The previous prime is 82774693. The next prime is 82774733. The reversal of 82774697 is 79647728.

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 82774697 - 2² = 82774693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82774691) 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, 2178263 + ... + 2178300.

It is an arithmetic number, because the mean of its divisors is an integer number (21782820).

Almost surely, 2^82774697 is an apocalyptic number.

It is an amenable number.

82774697 is a deficient number, since it is larger than the sum of its proper divisors (4356583).

82774697 is a wasteful number, since it uses less digits than its factorization.

82774697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356582.

The product of its digits is 1185408, while the sum is 50.

The square root of 82774697 is about 9098.0600679486. The cubic root of 82774697 is about 435.8120156559.

The spelling of 82774697 in words is "eighty-two million, seven hundred seventy-four thousand, six hundred ninety-seven".