36713781 has 24 divisors (see below), whose sum is σ = 57482880. Its totient is φ = 22445856.

The previous prime is 36713777. The next prime is 36713837. The reversal of 36713781 is 18731763.

It is not a de Polignac number, because 36713781 - 2² = 36713777 is a prime.

It is a super-2 number, since 2×36713781² = 2695803430631922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36713711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18600 + ... + 20478.

It is an arithmetic number, because the mean of its divisors is an integer number (2395120).

Almost surely, 2^36713781 is an apocalyptic number.

It is an amenable number.

36713781 is a deficient number, since it is larger than the sum of its proper divisors (20769099).

36713781 is a wasteful number, since it uses less digits than its factorization.

36713781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065 (or 2062 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 36713781 is about 6059.1897973244. The cubic root of 36713781 is about 332.3607301113.

The spelling of 36713781 in words is "thirty-six million, seven hundred thirteen thousand, seven hundred eighty-one".