36665977 has 2 divisors, whose sum is σ = 36665978. Its totient is φ = 36665976.

The previous prime is 36665939. The next prime is 36666017. The reversal of 36665977 is 77956663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29822521 + 6843456 = 5461^2 + 2616^2 .

It is a cyclic number.

It is not a de Polignac number, because 36665977 - 2¹⁵ = 36633209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36665977.

It is not a weakly prime, because it can be changed into another prime (36665477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18332988 + 18332989.

It is an arithmetic number, because the mean of its divisors is an integer number (18332989).

Almost surely, 2^36665977 is an apocalyptic number.

It is an amenable number.

36665977 is a deficient number, since it is larger than the sum of its proper divisors (1).

36665977 is an equidigital number, since it uses as much as digits as its factorization.

36665977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 49.

The square root of 36665977 is about 6055.2437605764. The cubic root of 36665977 is about 332.2164148818.

The spelling of 36665977 in words is "thirty-six million, six hundred sixty-five thousand, nine hundred seventy-seven".