82855985 has 8 divisors (see below), whose sum is σ = 100357056. Its totient is φ = 65664880.

The previous prime is 82855973. The next prime is 82856003. The reversal of 82855985 is 58955828.

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

It is not a de Polignac number, because 82855985 - 2¹² = 82851889 is a prime.

It is a super-2 number, since 2×82855985² = 13730228500640450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76901 + ... + 77970.

It is an arithmetic number, because the mean of its divisors is an integer number (12544632).

Almost surely, 2^82855985 is an apocalyptic number.

It is an amenable number.

82855985 is a deficient number, since it is larger than the sum of its proper divisors (17501071).

82855985 is a wasteful number, since it uses less digits than its factorization.

82855985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154983.

The product of its digits is 1152000, while the sum is 50.

The square root of 82855985 is about 9102.5262976824. The cubic root of 82855985 is about 435.9546304809.

The spelling of 82855985 in words is "eighty-two million, eight hundred fifty-five thousand, nine hundred eighty-five".