621412544 has 28 divisors (see below), whose sum is σ = 1254023400. Its totient is φ = 305438208.

The previous prime is 621412541. The next prime is 621412553. The reversal of 621412544 is 445214126.

It is not an unprimeable number, because it can be changed into a prime (621412541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78509 + ... + 86060.

It is an arithmetic number, because the mean of its divisors is an integer number (44786550).

Almost surely, 2^621412544 is an apocalyptic number.

621412544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

621412544 is an abundant number, since it is smaller than the sum of its proper divisors (632610856).

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

621412544 is a wasteful number, since it uses less digits than its factorization.

621412544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164640 (or 164630 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 621412544 is about 24928.1476247233. The cubic root of 621412544 is about 853.3489764927.

The spelling of 621412544 in words is "six hundred twenty-one million, four hundred twelve thousand, five hundred forty-four".