621868126 has 48 divisors (see below), whose sum is σ = 1101431520. Its totient is φ = 262169600.

The previous prime is 621868063. The next prime is 621868151.

621868126 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×621868126² = 773439932269503752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 291030 + ... + 293158.

It is an arithmetic number, because the mean of its divisors is an integer number (22946490).

Almost surely, 2^621868126 is an apocalyptic number.

621868126 is a deficient number, since it is larger than the sum of its proper divisors (479563394).

621868126 is a wasteful number, since it uses less digits than its factorization.

621868126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241 (or 2230 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 621868126 is about 24937.2838536999. The cubic root of 621868126 is about 853.5574667934.

The spelling of 621868126 in words is "six hundred twenty-one million, eight hundred sixty-eight thousand, one hundred twenty-six".