36644997 has 4 divisors (see below), whose sum is σ = 48860000. Its totient is φ = 24429996.

The previous prime is 36644989. The next prime is 36645001. The reversal of 36644997 is 79944663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79944663 = 3 ⋅26648221.

It is not a de Polignac number, because 36644997 - 2³ = 36644989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36642997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6107497 + ... + 6107502.

It is an arithmetic number, because the mean of its divisors is an integer number (12215000).

Almost surely, 2^36644997 is an apocalyptic number.

It is an amenable number.

36644997 is a deficient number, since it is larger than the sum of its proper divisors (12215003).

36644997 is a wasteful number, since it uses less digits than its factorization.

36644997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12215002.

The product of its digits is 979776, while the sum is 48.

The square root of 36644997 is about 6053.5111299146. The cubic root of 36644997 is about 332.1530388699.

The spelling of 36644997 in words is "thirty-six million, six hundred forty-four thousand, nine hundred ninety-seven".