663622055 has 4 divisors (see below), whose sum is σ = 796346472. Its totient is φ = 530897640.

The previous prime is 663622031. The next prime is 663622061. The reversal of 663622055 is 550226366.

663622055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 663622055 - 2²⁴ = 646844839 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, 66362201 + ... + 66362210.

It is an arithmetic number, because the mean of its divisors is an integer number (199086618).

Almost surely, 2^663622055 is an apocalyptic number.

663622055 is a deficient number, since it is larger than the sum of its proper divisors (132724417).

663622055 is a wasteful number, since it uses less digits than its factorization.

663622055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132724416.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 663622055 is about 25760.8628543378. The cubic root of 663622055 is about 872.2485784984.

The spelling of 663622055 in words is "six hundred sixty-three million, six hundred twenty-two thousand, fifty-five".