82113961 has 8 divisors (see below), whose sum is σ = 88966944. Its totient is φ = 75485760.

The previous prime is 82113959. The next prime is 82113971. The reversal of 82113961 is 16931128.

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 82113961 - 2¹ = 82113959 is a prime.

It is a super-2 number, since 2×82113961² = 13485405182219042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82113901) 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, 55435 + ... + 56896.

It is an arithmetic number, because the mean of its divisors is an integer number (11120868).

Almost surely, 2^82113961 is an apocalyptic number.

It is an amenable number.

82113961 is a deficient number, since it is larger than the sum of its proper divisors (6852983).

82113961 is a wasteful number, since it uses less digits than its factorization.

82113961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112391.

The product of its digits is 2592, while the sum is 31.

The square root of 82113961 is about 9061.6753969672. The cubic root of 82113961 is about 434.6493161674.

The spelling of 82113961 in words is "eighty-two million, one hundred thirteen thousand, nine hundred sixty-one".