82864689 has 8 divisors (see below), whose sum is σ = 110528352. Its totient is φ = 55222080.

The previous prime is 82864679. The next prime is 82864693. The reversal of 82864689 is 98646828.

It is a happy number.

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

It is not a de Polignac number, because 82864689 - 2⁴ = 82864673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82864679) 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, 12249 + ... + 17769.

It is an arithmetic number, because the mean of its divisors is an integer number (13816044).

Almost surely, 2^82864689 is an apocalyptic number.

It is an amenable number.

82864689 is a deficient number, since it is larger than the sum of its proper divisors (27663663).

82864689 is a wasteful number, since it uses less digits than its factorization.

82864689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10527.

The product of its digits is 1327104, while the sum is 51.

The square root of 82864689 is about 9103.0043941547. The cubic root of 82864689 is about 435.9698955872.

The spelling of 82864689 in words is "eighty-two million, eight hundred sixty-four thousand, six hundred eighty-nine".