36649969 has 2 divisors, whose sum is σ = 36649970. Its totient is φ = 36649968.

The previous prime is 36649957. The next prime is 36650027. The reversal of 36649969 is 96994663.

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., 23232400 + 13417569 = 4820^2 + 3663^2 .

It is a cyclic number.

It is not a de Polignac number, because 36649969 - 2⁵ = 36649937 is a prime.

It is a super-2 number, since 2×36649969² = 2686440455401922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36649919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18324984 + 18324985.

It is an arithmetic number, because the mean of its divisors is an integer number (18324985).

Almost surely, 2^36649969 is an apocalyptic number.

It is an amenable number.

36649969 is a deficient number, since it is larger than the sum of its proper divisors (1).

36649969 is an equidigital number, since it uses as much as digits as its factorization.

36649969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 52.

The square root of 36649969 is about 6053.9217867429. The cubic root of 36649969 is about 332.1680603859.

The spelling of 36649969 in words is "thirty-six million, six hundred forty-nine thousand, nine hundred sixty-nine".