90682698793 has 2 divisors, whose sum is σ = 90682698794. Its totient is φ = 90682698792.

The previous prime is 90682698779. The next prime is 90682698809. The reversal of 90682698793 is 39789628609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70138636569 + 20544062224 = 264837^2 + 143332^2 .

It is a cyclic number.

It is not a de Polignac number, because 90682698793 - 2¹⁷ = 90682567721 is a prime.

It is not a weakly prime, because it can be changed into another prime (90682638793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45341349396 + 45341349397.

It is an arithmetic number, because the mean of its divisors is an integer number (45341349397).

Almost surely, 2^90682698793 is an apocalyptic number.

It is an amenable number.

90682698793 is a deficient number, since it is larger than the sum of its proper divisors (1).

90682698793 is an equidigital number, since it uses as much as digits as its factorization.

90682698793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70543872, while the sum is 67.

The spelling of 90682698793 in words is "ninety billion, six hundred eighty-two million, six hundred ninety-eight thousand, seven hundred ninety-three".