622665655 has 8 divisors (see below), whose sum is σ = 747372384. Its totient is φ = 498016800.

The previous prime is 622665653. The next prime is 622665709. The reversal of 622665655 is 556566226.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 622665655 - 2¹ = 622665653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622665653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14470 + ... + 38140.

It is an arithmetic number, because the mean of its divisors is an integer number (93421548).

Almost surely, 2^622665655 is an apocalyptic number.

622665655 is a deficient number, since it is larger than the sum of its proper divisors (124706729).

622665655 is a wasteful number, since it uses less digits than its factorization.

622665655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28937.

The product of its digits is 648000, while the sum is 43.

The square root of 622665655 is about 24953.2694250673. The cubic root of 622665655 is about 853.9221990160.

The spelling of 622665655 in words is "six hundred twenty-two million, six hundred sixty-five thousand, six hundred fifty-five".