36379681 has 4 divisors (see below), whose sum is σ = 39178132. Its totient is φ = 33581232.

The previous prime is 36379667. The next prime is 36379687. The reversal of 36379681 is 18697363.

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 11289600 + 25090081 = 3360^2 + 5009^2 .

It is a cyclic number.

It is not a de Polignac number, because 36379681 - 2⁵ = 36379649 is a prime.

It is a super-2 number, since 2×36379681² = 2646962379323522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36379687) 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, 1399206 + ... + 1399231.

It is an arithmetic number, because the mean of its divisors is an integer number (9794533).

Almost surely, 2^36379681 is an apocalyptic number.

It is an amenable number.

36379681 is a deficient number, since it is larger than the sum of its proper divisors (2798451).

36379681 is a wasteful number, since it uses less digits than its factorization.

36379681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798450.

The product of its digits is 163296, while the sum is 43.

The square root of 36379681 is about 6031.5570958087. The cubic root of 36379681 is about 331.3494816430.

The spelling of 36379681 in words is "thirty-six million, three hundred seventy-nine thousand, six hundred eighty-one".