213652621 has 8 divisors (see below), whose sum is σ = 262957184. Its totient is φ = 169043760.

The previous prime is 213652613. The next prime is 213652633. The reversal of 213652621 is 126256312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213652621 - 2³ = 213652613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213652621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213652601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173825 + ... + 1174006.

It is an arithmetic number, because the mean of its divisors is an integer number (32869648).

Almost surely, 2^213652621 is an apocalyptic number.

It is an amenable number.

213652621 is a deficient number, since it is larger than the sum of its proper divisors (49304563).

213652621 is a wasteful number, since it uses less digits than its factorization.

213652621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347851.

The product of its digits is 4320, while the sum is 28.

The square root of 213652621 is about 14616.8608462966. The cubic root of 213652621 is about 597.8185795455.

The spelling of 213652621 in words is "two hundred thirteen million, six hundred fifty-two thousand, six hundred twenty-one".