621455022 has 12 divisors (see below), whose sum is σ = 1346485920. Its totient is φ = 207151668.

The previous prime is 621454987. The next prime is 621455033. The reversal of 621455022 is 220554126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17262622 + ... + 17262657.

It is an arithmetic number, because the mean of its divisors is an integer number (112207160).

Almost surely, 2^621455022 is an apocalyptic number.

621455022 is an abundant number, since it is smaller than the sum of its proper divisors (725030898).

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

621455022 is a wasteful number, since it uses less digits than its factorization.

621455022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34525287 (or 34525284 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 621455022 is about 24928.9996189177. Note that the first 3 decimals coincide. The cubic root of 621455022 is about 853.3684202221.

The spelling of 621455022 in words is "six hundred twenty-one million, four hundred fifty-five thousand, twenty-two".