36862581 has 16 divisors (see below), whose sum is σ = 56336384. Its totient is φ = 21002544.

The previous prime is 36862577. The next prime is 36862597. The reversal of 36862581 is 18526863.

It is a happy number.

It is not a de Polignac number, because 36862581 - 2² = 36862577 is a prime.

It is a super-2 number, since 2×36862581² = 2717699755963122, which contains 22 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 (36862531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5316 + ... + 10098.

It is an arithmetic number, because the mean of its divisors is an integer number (3521024).

Almost surely, 2^36862581 is an apocalyptic number.

It is an amenable number.

36862581 is a deficient number, since it is larger than the sum of its proper divisors (19473803).

36862581 is a wasteful number, since it uses less digits than its factorization.

36862581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160.

The product of its digits is 69120, while the sum is 39.

The square root of 36862581 is about 6071.4562503571. The cubic root of 36862581 is about 332.8091413225.

The spelling of 36862581 in words is "thirty-six million, eight hundred sixty-two thousand, five hundred eighty-one".