82530681 has 8 divisors (see below), whose sum is σ = 110090304. Its totient is φ = 54995760.

The previous prime is 82530677. The next prime is 82530689. The reversal of 82530681 is 18603528.

It is a happy number.

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

It is not a de Polignac number, because 82530681 - 2² = 82530677 is a prime.

It is a super-2 number, since 2×82530681² = 13622626612647522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82530689) 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, 4036 + ... + 13466.

It is an arithmetic number, because the mean of its divisors is an integer number (13761288).

Almost surely, 2^82530681 is an apocalyptic number.

It is an amenable number.

82530681 is a deficient number, since it is larger than the sum of its proper divisors (27559623).

82530681 is a wasteful number, since it uses less digits than its factorization.

82530681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12351.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 82530681 is about 9084.6398387608. The cubic root of 82530681 is about 435.3833428839.

The spelling of 82530681 in words is "eighty-two million, five hundred thirty thousand, six hundred eighty-one".