621252313 has 8 divisors (see below), whose sum is σ = 684441216. Its totient is φ = 559182000.

The previous prime is 621252293. The next prime is 621252323. The reversal of 621252313 is 313252126.

621252313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621252313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621252323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278481 + ... + 280702.

It is an arithmetic number, because the mean of its divisors is an integer number (85555152).

Almost surely, 2^621252313 is an apocalyptic number.

It is an amenable number.

621252313 is a deficient number, since it is larger than the sum of its proper divisors (63188903).

621252313 is a wasteful number, since it uses less digits than its factorization.

621252313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559295.

The product of its digits is 2160, while the sum is 25.

The square root of 621252313 is about 24924.9335605935. The cubic root of 621252313 is about 853.2756249460.

The spelling of 621252313 in words is "six hundred twenty-one million, two hundred fifty-two thousand, three hundred thirteen".