621166252 has 24 divisors (see below), whose sum is σ = 1245597696. Its totient is φ = 265514448.

The previous prime is 621166229. The next prime is 621166253. The reversal of 621166252 is 252661126.

It is not an unprimeable number, because it can be changed into a prime (621166253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18238 + ... + 39685.

It is an arithmetic number, because the mean of its divisors is an integer number (51899904).

Almost surely, 2^621166252 is an apocalyptic number.

It is an amenable number.

621166252 is an abundant number, since it is smaller than the sum of its proper divisors (624431444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621166252 is a wasteful number, since it uses less digits than its factorization.

621166252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58317 (or 58315 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 621166252 is about 24923.2070970010. The cubic root of 621166252 is about 853.2362221982.

The spelling of 621166252 in words is "six hundred twenty-one million, one hundred sixty-six thousand, two hundred fifty-two".