621266426 has 16 divisors (see below), whose sum is σ = 1017020448. Its totient is φ = 282282000.

The previous prime is 621266419. The next prime is 621266441. The reversal of 621266426 is 624662126.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81056 + ... + 88388.

It is an arithmetic number, because the mean of its divisors is an integer number (63563778).

Almost surely, 2^621266426 is an apocalyptic number.

621266426 is a deficient number, since it is larger than the sum of its proper divisors (395754022).

621266426 is a wasteful number, since it uses less digits than its factorization.

621266426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11197.

The product of its digits is 41472, while the sum is 35.

The square root of 621266426 is about 24925.2166690683. The cubic root of 621266426 is about 853.2820861897.

The spelling of 621266426 in words is "six hundred twenty-one million, two hundred sixty-six thousand, four hundred twenty-six".