36612813 has 4 divisors (see below), whose sum is σ = 48817088. Its totient is φ = 24408540.

The previous prime is 36612799. The next prime is 36612817. The reversal of 36612813 is 31821663.

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: 31821663 = 3 ⋅10607221.

It is not a de Polignac number, because 36612813 - 2¹² = 36608717 is a prime.

It is a super-3 number, since 3×36612813³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36612817) 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, 6102133 + ... + 6102138.

It is an arithmetic number, because the mean of its divisors is an integer number (12204272).

Almost surely, 2^36612813 is an apocalyptic number.

It is an amenable number.

36612813 is a deficient number, since it is larger than the sum of its proper divisors (12204275).

36612813 is a wasteful number, since it uses less digits than its factorization.

36612813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12204274.

The product of its digits is 5184, while the sum is 30.

The square root of 36612813 is about 6050.8522540217. The cubic root of 36612813 is about 332.0557709811.

The spelling of 36612813 in words is "thirty-six million, six hundred twelve thousand, eight hundred thirteen".