82665290 has 16 divisors (see below), whose sum is σ = 149071968. Its totient is φ = 33005136.

The previous prime is 82665281. The next prime is 82665293. The reversal of 82665290 is 9256628.

It is not an unprimeable number, because it can be changed into a prime (82665293) 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, 1712 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (9316998).

Almost surely, 2^82665290 is an apocalyptic number.

82665290 is a deficient number, since it is larger than the sum of its proper divisors (66406678).

82665290 is a wasteful number, since it uses less digits than its factorization.

82665290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15253.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 82665290 is about 9092.0454244356. The cubic root of 82665290 is about 435.6199202867.

The spelling of 82665290 in words is "eighty-two million, six hundred sixty-five thousand, two hundred ninety".