82772769 has 4 divisors (see below), whose sum is σ = 110363696. Its totient is φ = 55181844.

The previous prime is 82772749. The next prime is 82772771. The reversal of 82772769 is 96727728.

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 not a de Polignac number, because 82772769 - 2⁸ = 82772513 is a prime.

It is a super-2 number, since 2×82772769² = 13702662575854722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82772749) 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, 13795459 + ... + 13795464.

It is an arithmetic number, because the mean of its divisors is an integer number (27590924).

Almost surely, 2^82772769 is an apocalyptic number.

It is an amenable number.

82772769 is a deficient number, since it is larger than the sum of its proper divisors (27590927).

82772769 is a wasteful number, since it uses less digits than its factorization.

82772769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27590926.

The product of its digits is 592704, while the sum is 48.

The square root of 82772769 is about 9097.9541106779. The cubic root of 82772769 is about 435.8086319645.

The spelling of 82772769 in words is "eighty-two million, seven hundred seventy-two thousand, seven hundred sixty-nine".