36664577 has 4 divisors (see below), whose sum is σ = 36707076. Its totient is φ = 36622080.

The previous prime is 36664549. The next prime is 36664583. The reversal of 36664577 is 77546663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25847056 + 10817521 = 5084^2 + 3289^2 .

It is a cyclic number.

It is not a de Polignac number, because 36664577 - 2⁸ = 36664321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36661577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19928 + ... + 21689.

It is an arithmetic number, because the mean of its divisors is an integer number (9176769).

Almost surely, 2^36664577 is an apocalyptic number.

It is an amenable number.

36664577 is a deficient number, since it is larger than the sum of its proper divisors (42499).

36664577 is an equidigital number, since it uses as much as digits as its factorization.

36664577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42498.

The product of its digits is 635040, while the sum is 44.

The square root of 36664577 is about 6055.1281571904. The cubic root of 36664577 is about 332.2121865396.

The spelling of 36664577 in words is "thirty-six million, six hundred sixty-four thousand, five hundred seventy-seven".