621761344 has 28 divisors (see below), whose sum is σ = 1234643200. Its totient is φ = 310670208.

The previous prime is 621761341. The next prime is 621761423. The reversal of 621761344 is 443167126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621761341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141127 + ... + 145465.

It is an arithmetic number, because the mean of its divisors is an integer number (44094400).

Almost surely, 2^621761344 is an apocalyptic number.

621761344 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

621761344 is a deficient number, since it is larger than the sum of its proper divisors (612881856).

621761344 is a wasteful number, since it uses less digits than its factorization.

621761344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6590 (or 6580 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 621761344 is about 24935.1427507444. The cubic root of 621761344 is about 853.5086087441.

The spelling of 621761344 in words is "six hundred twenty-one million, seven hundred sixty-one thousand, three hundred forty-four".