82607881 has 8 divisors (see below), whose sum is σ = 86292864. Its totient is φ = 78930720.

The previous prime is 82607873. The next prime is 82607971. The reversal of 82607881 is 18870628.

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 82607881 - 2³ = 82607873 is a prime.

It is a super-2 number, since 2×82607881² = 13648124006620322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82607821) 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, 33565 + ... + 35941.

It is an arithmetic number, because the mean of its divisors is an integer number (10786608).

Almost surely, 2^82607881 is an apocalyptic number.

It is an amenable number.

82607881 is a deficient number, since it is larger than the sum of its proper divisors (3684983).

82607881 is a wasteful number, since it uses less digits than its factorization.

82607881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 82607881 is about 9088.8877757402. The cubic root of 82607881 is about 435.5190545122.

The spelling of 82607881 in words is "eighty-two million, six hundred seven thousand, eight hundred eighty-one".