622635 has 32 divisors (see below), whose sum is σ = 1118208. Its totient is φ = 293760.

The previous prime is 622621. The next prime is 622637. The reversal of 622635 is 536226.

It is not a de Polignac number, because 622635 - 2⁴ = 622619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (622637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5994 + ... + 6096.

It is an arithmetic number, because the mean of its divisors is an integer number (34944).

2⁶²²⁶³⁵ is an apocalyptic number.

622635 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

622635 is a deficient number, since it is larger than the sum of its proper divisors (495573).

622635 is a wasteful number, since it uses less digits than its factorization.

622635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155.

The product of its digits is 2160, while the sum is 24.

The square root of 622635 is about 789.0722400389. The cubic root of 622635 is about 85.3908185388.

The spelling of 622635 in words is "six hundred twenty-two thousand, six hundred thirty-five".