82723957 has 4 divisors (see below), whose sum is σ = 82789036. Its totient is φ = 82658880.

The previous prime is 82723943. The next prime is 82724009. The reversal of 82723957 is 75932728.

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 69372241 + 13351716 = 8329^2 + 3654^2 .

It is a cyclic number.

It is not a de Polignac number, because 82723957 - 2⁷ = 82723829 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 (82723057) 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, 30594 + ... + 33187.

It is an arithmetic number, because the mean of its divisors is an integer number (20697259).

Almost surely, 2^82723957 is an apocalyptic number.

It is an amenable number.

82723957 is a deficient number, since it is larger than the sum of its proper divisors (65079).

82723957 is a wasteful number, since it uses less digits than its factorization.

82723957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65078.

The product of its digits is 211680, while the sum is 43.

The square root of 82723957 is about 9095.2711339465. The cubic root of 82723957 is about 435.7229480931.

The spelling of 82723957 in words is "eighty-two million, seven hundred twenty-three thousand, nine hundred fifty-seven".