622645501 has 4 divisors (see below), whose sum is σ = 623996604. Its totient is φ = 621294400.

The previous prime is 622645487. The next prime is 622645559. The reversal of 622645501 is 105546226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 454968900 + 167676601 = 21330^2 + 12949^2 .

It is a cyclic number.

It is not a de Polignac number, because 622645501 - 2⁵ = 622645469 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622645301) 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, 674860 + ... + 675781.

It is an arithmetic number, because the mean of its divisors is an integer number (155999151).

Almost surely, 2^622645501 is an apocalyptic number.

It is an amenable number.

622645501 is a deficient number, since it is larger than the sum of its proper divisors (1351103).

622645501 is a wasteful number, since it uses less digits than its factorization.

622645501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351102.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 622645501 is about 24952.8655869421. The cubic root of 622645501 is about 853.9129858674.

The spelling of 622645501 in words is "six hundred twenty-two million, six hundred forty-five thousand, five hundred one".