621353079 has 16 divisors (see below), whose sum is σ = 937893600. Its totient is φ = 406418688.

The previous prime is 621353069. The next prime is 621353123. The reversal of 621353079 is 970353126.

It is not a de Polignac number, because 621353079 - 2⁴ = 621353063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621353039) 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, 215674 + ... + 218535.

It is an arithmetic number, because the mean of its divisors is an integer number (58618350).

Almost surely, 2^621353079 is an apocalyptic number.

621353079 is a deficient number, since it is larger than the sum of its proper divisors (316540521).

621353079 is a wasteful number, since it uses less digits than its factorization.

621353079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434271 (or 434265 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 621353079 is about 24926.9548681743. The cubic root of 621353079 is about 853.3217557057.

The spelling of 621353079 in words is "six hundred twenty-one million, three hundred fifty-three thousand, seventy-nine".