82738685 has 4 divisors (see below), whose sum is σ = 99286428. Its totient is φ = 66190944.

The previous prime is 82738681. The next prime is 82738703. The reversal of 82738685 is 58683728.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15531481 + 67207204 = 3941^2 + 8198^2 .

It is a cyclic number.

It is not a de Polignac number, because 82738685 - 2² = 82738681 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 (82738681) 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, 8273864 + ... + 8273873.

It is an arithmetic number, because the mean of its divisors is an integer number (24821607).

Almost surely, 2^82738685 is an apocalyptic number.

It is an amenable number.

82738685 is a deficient number, since it is larger than the sum of its proper divisors (16547743).

82738685 is a wasteful number, since it uses less digits than its factorization.

82738685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16547742.

The product of its digits is 645120, while the sum is 47.

The square root of 82738685 is about 9096.0807494217. The cubic root of 82738685 is about 435.7488049589.

The spelling of 82738685 in words is "eighty-two million, seven hundred thirty-eight thousand, six hundred eighty-five".