36645997 has 2 divisors, whose sum is σ = 36645998. Its totient is φ = 36645996.

The previous prime is 36645941. The next prime is 36646081. The reversal of 36645997 is 79954663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22099401 + 14546596 = 4701^2 + 3814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36645997 is a prime.

It is a super-2 number, since 2×36645997² = 2685858192248018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36645997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36645907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18322998 + 18322999.

It is an arithmetic number, because the mean of its divisors is an integer number (18322999).

Almost surely, 2^36645997 is an apocalyptic number.

It is an amenable number.

36645997 is a deficient number, since it is larger than the sum of its proper divisors (1).

36645997 is an equidigital number, since it uses as much as digits as its factorization.

36645997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 49.

The square root of 36645997 is about 6053.5937260441. The cubic root of 36645997 is about 332.1560602011.

The spelling of 36645997 in words is "thirty-six million, six hundred forty-five thousand, nine hundred ninety-seven".