36900781 has 4 divisors (see below), whose sum is σ = 37685952. Its totient is φ = 36115612.

The previous prime is 36900737. The next prime is 36900797. The reversal of 36900781 is 18700963.

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.

It is a cyclic number.

It is not a de Polignac number, because 36900781 - 2²³ = 28512173 is a prime.

It is a super-2 number, since 2×36900781² = 2723335276819922, 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 (36900481) 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, 392515 + ... + 392608.

It is an arithmetic number, because the mean of its divisors is an integer number (9421488).

Almost surely, 2^36900781 is an apocalyptic number.

It is an amenable number.

36900781 is a deficient number, since it is larger than the sum of its proper divisors (785171).

36900781 is an equidigital number, since it uses as much as digits as its factorization.

36900781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785170.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 36900781 is about 6074.6013037894. The cubic root of 36900781 is about 332.9240629211.

The spelling of 36900781 in words is "thirty-six million, nine hundred thousand, seven hundred eighty-one".