83126681 has 4 divisors (see below), whose sum is σ = 90683664. Its totient is φ = 75569700.

The previous prime is 83126677. The next prime is 83126759. The reversal of 83126681 is 18662138.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83126681 - 2² = 83126677 is a prime.

It is a super-2 number, since 2×83126681² = 13820090188151522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83126581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3778475 + ... + 3778496.

It is an arithmetic number, because the mean of its divisors is an integer number (22670916).

Almost surely, 2^83126681 is an apocalyptic number.

It is an amenable number.

83126681 is a deficient number, since it is larger than the sum of its proper divisors (7556983).

83126681 is a wasteful number, since it uses less digits than its factorization.

83126681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7556982.

The product of its digits is 13824, while the sum is 35.

The square root of 83126681 is about 9117.3834514075. The cubic root of 83126681 is about 436.4288786222.

The spelling of 83126681 in words is "eighty-three million, one hundred twenty-six thousand, six hundred eighty-one".