36974221 has 4 divisors (see below), whose sum is σ = 36988252. Its totient is φ = 36960192.

The previous prime is 36974213. The next prime is 36974239. The reversal of 36974221 is 12247963.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15015625 + 21958596 = 3875^2 + 4686^2 .

It is a cyclic number.

It is not a de Polignac number, because 36974221 - 2³ = 36974213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36974521) 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, 1740 + ... + 8773.

It is an arithmetic number, because the mean of its divisors is an integer number (9247063).

Almost surely, 2^36974221 is an apocalyptic number.

It is an amenable number.

36974221 is a deficient number, since it is larger than the sum of its proper divisors (14031).

36974221 is a wasteful number, since it uses less digits than its factorization.

36974221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14030.

The product of its digits is 18144, while the sum is 34.

The square root of 36974221 is about 6080.6431403265. The cubic root of 36974221 is about 333.1447785837.

The spelling of 36974221 in words is "thirty-six million, nine hundred seventy-four thousand, two hundred twenty-one".