82831689 has 6 divisors (see below), whose sum is σ = 119645786. Its totient is φ = 55221120.

The previous prime is 82831669. The next prime is 82831703. The reversal of 82831689 is 98613828.

It can be written as a sum of positive squares in only one way, i.e., 57881664 + 24950025 = 7608^2 + 4995^2 .

It is not a de Polignac number, because 82831689 - 2⁵ = 82831657 is a prime.

It is a super-2 number, since 2×82831689² = 13722177405185442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82831649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4601752 + ... + 4601769.

Almost surely, 2^82831689 is an apocalyptic number.

It is an amenable number.

82831689 is a deficient number, since it is larger than the sum of its proper divisors (36814097).

82831689 is a wasteful number, since it uses less digits than its factorization.

82831689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9203527 (or 9203524 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 82831689 is about 9101.1916252763. The cubic root of 82831689 is about 435.9120144117.

The spelling of 82831689 in words is "eighty-two million, eight hundred thirty-one thousand, six hundred eighty-nine".