36611969 has 2 divisors, whose sum is σ = 36611970. Its totient is φ = 36611968.

The previous prime is 36611957. The next prime is 36611987. The reversal of 36611969 is 96911663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30658369 + 5953600 = 5537^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 36611969 - 2¹² = 36607873 is a prime.

It is a super-2 number, since 2×36611969² = 2680872548113922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (36611269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18305984 + 18305985.

It is an arithmetic number, because the mean of its divisors is an integer number (18305985).

Almost surely, 2^36611969 is an apocalyptic number.

It is an amenable number.

36611969 is a deficient number, since it is larger than the sum of its proper divisors (1).

36611969 is an equidigital number, since it uses as much as digits as its factorization.

36611969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 41.

The square root of 36611969 is about 6050.7825113782. The cubic root of 36611969 is about 332.0532194406.

The spelling of 36611969 in words is "thirty-six million, six hundred eleven thousand, nine hundred sixty-nine".