621258945 has 8 divisors (see below), whose sum is σ = 994014336. Its totient is φ = 331338096.

The previous prime is 621258929. The next prime is 621258959. The reversal of 621258945 is 549852126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 621258945 - 2⁴ = 621258929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621258897 and 621258906.

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, 20708617 + ... + 20708646.

It is an arithmetic number, because the mean of its divisors is an integer number (124251792).

Almost surely, 2^621258945 is an apocalyptic number.

It is an amenable number.

621258945 is a deficient number, since it is larger than the sum of its proper divisors (372755391).

621258945 is a wasteful number, since it uses less digits than its factorization.

621258945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41417271.

The product of its digits is 172800, while the sum is 42.

The square root of 621258945 is about 24925.0665997104. The cubic root of 621258945 is about 853.2786612346.

The spelling of 621258945 in words is "six hundred twenty-one million, two hundred fifty-eight thousand, nine hundred forty-five".