36640873 has 4 divisors (see below), whose sum is σ = 38569360. Its totient is φ = 34712388.

The previous prime is 36640847. The next prime is 36640883. The reversal of 36640873 is 37804663.

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 not a de Polignac number, because 36640873 - 2²¹ = 34543721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36640843) 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, 964215 + ... + 964252.

It is an arithmetic number, because the mean of its divisors is an integer number (9642340).

Almost surely, 2^36640873 is an apocalyptic number.

It is an amenable number.

36640873 is a deficient number, since it is larger than the sum of its proper divisors (1928487).

36640873 is a wasteful number, since it uses less digits than its factorization.

36640873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928486.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 36640873 is about 6053.1704915689. The cubic root of 36640873 is about 332.1405783193.

The spelling of 36640873 in words is "thirty-six million, six hundred forty thousand, eight hundred seventy-three".