622015655 has 4 divisors (see below), whose sum is σ = 746418792. Its totient is φ = 497612520.

The previous prime is 622015649. The next prime is 622015663. The reversal of 622015655 is 556510226.

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

It is not a de Polignac number, because 622015655 - 2¹⁴ = 621999271 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 3 ways as a sum of consecutive naturals, for example, 62201561 + ... + 62201570.

It is an arithmetic number, because the mean of its divisors is an integer number (186604698).

Almost surely, 2^622015655 is an apocalyptic number.

622015655 is a deficient number, since it is larger than the sum of its proper divisors (124403137).

622015655 is a wasteful number, since it uses less digits than its factorization.

622015655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124403136.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 622015655 is about 24940.2416788611. The cubic root of 622015655 is about 853.6249594111.

The spelling of 622015655 in words is "six hundred twenty-two million, fifteen thousand, six hundred fifty-five".