92686721 has 2 divisors, whose sum is σ = 92686722. Its totient is φ = 92686720.

The previous prime is 92686709. The next prime is 92686777. The reversal of 92686721 is 12768629.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 2436721 = 9500^2 + 1561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-92686721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (92646721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46343360 + 46343361.

It is an arithmetic number, because the mean of its divisors is an integer number (46343361).

Almost surely, 2^92686721 is an apocalyptic number.

It is an amenable number.

92686721 is a deficient number, since it is larger than the sum of its proper divisors (1).

92686721 is an equidigital number, since it uses as much as digits as its factorization.

92686721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 92686721 is about 9627.3942996015. The cubic root of 92686721 is about 452.5561864645.

The spelling of 92686721 in words is "ninety-two million, six hundred eighty-six thousand, seven hundred twenty-one".