82790081 has 8 divisors (see below), whose sum is σ = 92021184. Its totient is φ = 73843120.

The previous prime is 82790063. The next prime is 82790089. The reversal of 82790081 is 18009728.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82790081 - 2²⁶ = 15681217 is a prime.

It is a super-2 number, since 2×82790081² = 13708395023973122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82790089) 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, 70421 + ... + 71586.

It is an arithmetic number, because the mean of its divisors is an integer number (11502648).

Almost surely, 2^82790081 is an apocalyptic number.

It is an amenable number.

82790081 is a deficient number, since it is larger than the sum of its proper divisors (9231103).

82790081 is a wasteful number, since it uses less digits than its factorization.

82790081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142071.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 82790081 is about 9098.9054836282. The cubic root of 82790081 is about 435.8390131039.

The spelling of 82790081 in words is "eighty-two million, seven hundred ninety thousand, eighty-one".