621141705 has 24 divisors (see below), whose sum is σ = 1089623808. Its totient is φ = 327282336.

The previous prime is 621141679. The next prime is 621141709. The reversal of 621141705 is 507141126.

It is a happy number.

621141705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 621141705 - 2⁹ = 621141193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (621141709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79417 + ... + 86886.

It is an arithmetic number, because the mean of its divisors is an integer number (45400992).

Almost surely, 2^621141705 is an apocalyptic number.

It is an amenable number.

621141705 is a deficient number, since it is larger than the sum of its proper divisors (468482103).

621141705 is a wasteful number, since it uses less digits than its factorization.

621141705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166397 (or 166394 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 621141705 is about 24922.7146394609. The cubic root of 621141705 is about 853.2249827673.

The spelling of 621141705 in words is "six hundred twenty-one million, one hundred forty-one thousand, seven hundred five".