36872861 has 4 divisors (see below), whose sum is σ = 36923232. Its totient is φ = 36822492.

The previous prime is 36872839. The next prime is 36872903. The reversal of 36872861 is 16827863.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-36872861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36872821) 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, 24071 + ... + 25556.

It is an arithmetic number, because the mean of its divisors is an integer number (9230808).

Almost surely, 2^36872861 is an apocalyptic number.

It is an amenable number.

36872861 is a deficient number, since it is larger than the sum of its proper divisors (50371).

36872861 is an equidigital number, since it uses as much as digits as its factorization.

36872861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50370.

The product of its digits is 96768, while the sum is 41.

The square root of 36872861 is about 6072.3027757186. The cubic root of 36872861 is about 332.8400756729.

The spelling of 36872861 in words is "thirty-six million, eight hundred seventy-two thousand, eight hundred sixty-one".