82668279 has 16 divisors (see below), whose sum is σ = 115467264. Its totient is φ = 52509600.

The previous prime is 82668277. The next prime is 82668283. The reversal of 82668279 is 97286628.

It is a happy number.

It is not a de Polignac number, because 82668279 - 2¹ = 82668277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82668277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16489 + ... + 20909.

It is an arithmetic number, because the mean of its divisors is an integer number (7216704).

Almost surely, 2^82668279 is an apocalyptic number.

82668279 is a deficient number, since it is larger than the sum of its proper divisors (32798985).

82668279 is a wasteful number, since it uses less digits than its factorization.

82668279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718.

The product of its digits is 580608, while the sum is 48.

The square root of 82668279 is about 9092.2097974035. The cubic root of 82668279 is about 435.6251705848.

The spelling of 82668279 in words is "eighty-two million, six hundred sixty-eight thousand, two hundred seventy-nine".