621723326 has 16 divisors (see below), whose sum is σ = 1090598784. Its totient is φ = 260256024.

The previous prime is 621723253. The next prime is 621723341. The reversal of 621723326 is 623327126.

It is a junction number, because it is equal to n+sod(n) for n = 621723292 and 621723301.

It is a congruent number.

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, 515780 + ... + 516983.

It is an arithmetic number, because the mean of its divisors is an integer number (68162424).

Almost surely, 2^621723326 is an apocalyptic number.

621723326 is a deficient number, since it is larger than the sum of its proper divisors (468875458).

621723326 is a wasteful number, since it uses less digits than its factorization.

621723326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032815.

The product of its digits is 18144, while the sum is 32.

The square root of 621723326 is about 24934.3804013655. The cubic root of 621723326 is about 853.4912122773.

The spelling of 621723326 in words is "six hundred twenty-one million, seven hundred twenty-three thousand, three hundred twenty-six".