622616405 has 6 divisors (see below), whose sum is σ = 747206646. Its totient is φ = 498048488.

The previous prime is 622616383. The next prime is 622616413. The reversal of 622616405 is 504616226.

It can be written as a sum of positive squares in only one way, i.e., 498093124 + 124523281 = 22318^2 + 11159^2 .

It is not a de Polignac number, because 622616405 - 2¹⁸ = 622354261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50216 + ... + 61374.

It is an arithmetic number, because the mean of its divisors is an integer number (124534441).

Almost surely, 2^622616405 is an apocalyptic number.

It is an amenable number.

622616405 is a deficient number, since it is larger than the sum of its proper divisors (124590241).

622616405 is an frugal number, since it uses more digits than its factorization.

622616405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22323 (or 11164 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 622616405 is about 24952.2825609202. The cubic root of 622616405 is about 853.8996846448.

The spelling of 622616405 in words is "six hundred twenty-two million, six hundred sixteen thousand, four hundred five".