82770774 has 16 divisors (see below), whose sum is σ = 165745008. Its totient is φ = 27556352.

The previous prime is 82770733. The next prime is 82770781. The reversal of 82770774 is 47707728.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2907 + ... + 13190.

It is an arithmetic number, because the mean of its divisors is an integer number (10359063).

Almost surely, 2^82770774 is an apocalyptic number.

82770774 is an abundant number, since it is smaller than the sum of its proper divisors (82974234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82770774 is a wasteful number, since it uses less digits than its factorization.

82770774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16959.

The product of its (nonzero) digits is 153664, while the sum is 42.

The square root of 82770774 is about 9097.8444699830. The cubic root of 82770774 is about 435.8051306310.

The spelling of 82770774 in words is "eighty-two million, seven hundred seventy thousand, seven hundred seventy-four".