367564221 has 12 divisors (see below), whose sum is σ = 543876060. Its totient is φ = 239065920.

The previous prime is 367564217. The next prime is 367564229. The reversal of 367564221 is 122465763.

367564221 is a `hidden beast` number, since 3 + 6 + 7 + 5 + 642 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 195692121 + 171872100 = 13989^2 + 13110^2 .

It is not a de Polignac number, because 367564221 - 2² = 367564217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (367564229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497686 + ... + 498423.

It is an arithmetic number, because the mean of its divisors is an integer number (45323005).

Almost surely, 2^367564221 is an apocalyptic number.

It is an amenable number.

367564221 is a deficient number, since it is larger than the sum of its proper divisors (176311839).

367564221 is a wasteful number, since it uses less digits than its factorization.

367564221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996156 (or 996153 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 367564221 is about 19171.9644533365. The cubic root of 367564221 is about 716.3265970731.

It can be divided in two parts, 3675 and 64221, that added together give a triangular number (67896 = T₃₆₈).

The spelling of 367564221 in words is "three hundred sixty-seven million, five hundred sixty-four thousand, two hundred twenty-one".