36999689 has 2 divisors, whose sum is σ = 36999690. Its totient is φ = 36999688.

The previous prime is 36999661. The next prime is 36999731. The reversal of 36999689 is 98699963.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30913600 + 6086089 = 5560^2 + 2467^2 .

It is a cyclic number.

It is not a de Polignac number, because 36999689 - 2²⁴ = 20222473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36999619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18499844 + 18499845.

It is an arithmetic number, because the mean of its divisors is an integer number (18499845).

Almost surely, 2^36999689 is an apocalyptic number.

It is an amenable number.

36999689 is a deficient number, since it is larger than the sum of its proper divisors (1).

36999689 is an equidigital number, since it uses as much as digits as its factorization.

36999689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5668704, while the sum is 59.

The square root of 36999689 is about 6082.7369662020. The cubic root of 36999689 is about 333.2212515395.

The spelling of 36999689 in words is "thirty-six million, nine hundred ninety-nine thousand, six hundred eighty-nine".