622909955 has 4 divisors (see below), whose sum is σ = 747491952. Its totient is φ = 498327960.

The previous prime is 622909891. The next prime is 622909957. The reversal of 622909955 is 559909226.

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

It is not a de Polignac number, because 622909955 - 2⁶ = 622909891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622909957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62290991 + ... + 62291000.

It is an arithmetic number, because the mean of its divisors is an integer number (186872988).

Almost surely, 2^622909955 is an apocalyptic number.

622909955 is a deficient number, since it is larger than the sum of its proper divisors (124581997).

622909955 is a wasteful number, since it uses less digits than its factorization.

622909955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124581996.

The product of its (nonzero) digits is 437400, while the sum is 47.

The square root of 622909955 is about 24958.1640951413. The cubic root of 622909955 is about 854.0338618936.

The spelling of 622909955 in words is "six hundred twenty-two million, nine hundred nine thousand, nine hundred fifty-five".