621310461 has 4 divisors (see below), whose sum is σ = 828413952. Its totient is φ = 414206972.

The previous prime is 621310453. The next prime is 621310553. The reversal of 621310461 is 164013126.

621310461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 621310461 - 2³ = 621310453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621360461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103551741 + ... + 103551746.

It is an arithmetic number, because the mean of its divisors is an integer number (207103488).

Almost surely, 2^621310461 is an apocalyptic number.

It is an amenable number.

621310461 is a deficient number, since it is larger than the sum of its proper divisors (207103491).

621310461 is a wasteful number, since it uses less digits than its factorization.

621310461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207103490.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 621310461 is about 24926.0999957875. The cubic root of 621310461 is about 853.3022457581.

Adding to 621310461 its reverse (164013126), we get a palindrome (785323587).

The spelling of 621310461 in words is "six hundred twenty-one million, three hundred ten thousand, four hundred sixty-one".