36621013 has 24 divisors (see below), whose sum is σ = 44807168. Its totient is φ = 29700000.

The previous prime is 36621007. The next prime is 36621017. The reversal of 36621013 is 31012663.

It is not a de Polignac number, because 36621013 - 2²¹ = 34523861 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 (36621017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48388 + ... + 49138.

Almost surely, 2^36621013 is an apocalyptic number.

It is an amenable number.

36621013 is a deficient number, since it is larger than the sum of its proper divisors (8186155).

36621013 is a wasteful number, since it uses less digits than its factorization.

36621013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 36621013 is about 6051.5298065861. The cubic root of 36621013 is about 332.0805587885.

Adding to 36621013 its reverse (31012663), we get a palindrome (67633676).

The spelling of 36621013 in words is "thirty-six million, six hundred twenty-one thousand, thirteen".