622665601 has 4 divisors (see below), whose sum is σ = 629084932. Its totient is φ = 616246272.

The previous prime is 622665599. The next prime is 622665619. The reversal of 622665601 is 106566226.

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 150038001 + 472627600 = 12249^2 + 21740^2 .

It is a cyclic number.

It is not a de Polignac number, because 622665601 - 2¹ = 622665599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622660601) 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, 3209520 + ... + 3209713.

It is an arithmetic number, because the mean of its divisors is an integer number (157271233).

Almost surely, 2^622665601 is an apocalyptic number.

It is an amenable number.

622665601 is a deficient number, since it is larger than the sum of its proper divisors (6419331).

622665601 is an equidigital number, since it uses as much as digits as its factorization.

622665601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6419330.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 622665601 is about 24953.2683430448. The cubic root of 622665601 is about 853.9221743309.

The spelling of 622665601 in words is "six hundred twenty-two million, six hundred sixty-five thousand, six hundred one".