82176661 has 8 divisors (see below), whose sum is σ = 94592960. Its totient is φ = 69929568.

The previous prime is 82176643. The next prime is 82176671. The reversal of 82176661 is 16667128.

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 82176661 - 2¹⁷ = 82045589 is a prime.

It is a super-2 number, since 2×82176661² = 13506007226217842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82176661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82176671) 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, 41256 + ... + 43201.

It is an arithmetic number, because the mean of its divisors is an integer number (11824120).

Almost surely, 2^82176661 is an apocalyptic number.

It is an amenable number.

82176661 is a deficient number, since it is larger than the sum of its proper divisors (12416299).

82176661 is a wasteful number, since it uses less digits than its factorization.

82176661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84603.

The product of its digits is 24192, while the sum is 37.

The square root of 82176661 is about 9065.1343619386. The cubic root of 82176661 is about 434.7599168428.

It can be divided in two parts, 8217 and 6661, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 82176661 in words is "eighty-two million, one hundred seventy-six thousand, six hundred sixty-one".