82866831 has 8 divisors (see below), whose sum is σ = 110655024. Its totient is φ = 55161600.

The previous prime is 82866803. The next prime is 82866859. The reversal of 82866831 is 13866828.

It is an interprime number because it is at equal distance from previous prime (82866803) and next prime (82866859).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82866831 - 2⁶ = 82866767 is a prime.

It is a super-2 number, since 2×82866831² = 13733823359965122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82866331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18370 + ... + 22431.

It is an arithmetic number, because the mean of its divisors is an integer number (13831878).

Almost surely, 2^82866831 is an apocalyptic number.

82866831 is a deficient number, since it is larger than the sum of its proper divisors (27788193).

82866831 is a wasteful number, since it uses less digits than its factorization.

82866831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41481.

The product of its digits is 110592, while the sum is 42.

The square root of 82866831 is about 9103.1220468584. The cubic root of 82866831 is about 435.9736520705.

The spelling of 82866831 in words is "eighty-two million, eight hundred sixty-six thousand, eight hundred thirty-one".