82665129 has 8 divisors (see below), whose sum is σ = 110470752. Its totient is φ = 54984800.

The previous prime is 82665119. The next prime is 82665131. The reversal of 82665129 is 92156628.

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 82665129 - 2⁸ = 82664873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82665119) 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, 29772 + ... + 32429.

It is an arithmetic number, because the mean of its divisors is an integer number (13808844).

Almost surely, 2^82665129 is an apocalyptic number.

It is an amenable number.

82665129 is a deficient number, since it is larger than the sum of its proper divisors (27805623).

82665129 is a wasteful number, since it uses less digits than its factorization.

82665129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62647.

The product of its digits is 51840, while the sum is 39.

The square root of 82665129 is about 9092.0365705380. The cubic root of 82665129 is about 435.6196374802.

The spelling of 82665129 in words is "eighty-two million, six hundred sixty-five thousand, one hundred twenty-nine".