621410345 has 16 divisors (see below), whose sum is σ = 772236288. Its totient is φ = 479536320.

The previous prime is 621410341. The next prime is 621410381. The reversal of 621410345 is 543014126.

It is not a de Polignac number, because 621410345 - 2² = 621410341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (621410341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42812 + ... + 55458.

It is an arithmetic number, because the mean of its divisors is an integer number (48264768).

Almost surely, 2^621410345 is an apocalyptic number.

It is an amenable number.

621410345 is a deficient number, since it is larger than the sum of its proper divisors (150825943).

621410345 is a wasteful number, since it uses less digits than its factorization.

621410345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 621410345 is about 24928.1035179173. The cubic root of 621410345 is about 853.3479699061.

The spelling of 621410345 in words is "six hundred twenty-one million, four hundred ten thousand, three hundred forty-five".