82855670 has 16 divisors (see below), whose sum is σ = 152778528. Its totient is φ = 32333760.

The previous prime is 82855667. The next prime is 82855679. The reversal of 82855670 is 7655828.

It is a super-2 number, since 2×82855670² = 13730124102297800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82855679) 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, 100634 + ... + 101453.

It is an arithmetic number, because the mean of its divisors is an integer number (9548658).

Almost surely, 2^82855670 is an apocalyptic number.

82855670 is a deficient number, since it is larger than the sum of its proper divisors (69922858).

82855670 is a wasteful number, since it uses less digits than its factorization.

82855670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202135.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 82855670 is about 9102.5089947772. The cubic root of 82855670 is about 435.9540780128.

The spelling of 82855670 in words is "eighty-two million, eight hundred fifty-five thousand, six hundred seventy".