36799681 has 2 divisors, whose sum is σ = 36799682. Its totient is φ = 36799680.

The previous prime is 36799667. The next prime is 36799699. The reversal of 36799681 is 18699763.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18447025 + 18352656 = 4295^2 + 4284^2 .

It is a cyclic number.

It is not a de Polignac number, because 36799681 - 2¹⁵ = 36766913 is a prime.

It is a super-2 number, since 2×36799681² = 2708433043403522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36799601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18399840 + 18399841.

It is an arithmetic number, because the mean of its divisors is an integer number (18399841).

Almost surely, 2^36799681 is an apocalyptic number.

It is an amenable number.

36799681 is a deficient number, since it is larger than the sum of its proper divisors (1).

36799681 is an equidigital number, since it uses as much as digits as its factorization.

36799681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 36799681 is about 6066.2740623879. The cubic root of 36799681 is about 332.6197386603.

The spelling of 36799681 in words is "thirty-six million, seven hundred ninety-nine thousand, six hundred eighty-one".