622408 has 8 divisors (see below), whose sum is σ = 1167030. Its totient is φ = 311200.

The previous prime is 622399. The next prime is 622423. The reversal of 622408 is 804226.

It can be written as a sum of positive squares in only one way, i.e., 521284 + 101124 = 722^2 + 318^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 38893 + ... + 38908.

2⁶²²⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

622408 is a deficient number, since it is larger than the sum of its proper divisors (544622).

622408 is a wasteful number, since it uses less digits than its factorization.

622408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77807 (or 77803 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 622408 is about 788.9283871176. The cubic root of 622408 is about 85.3804400282.

The spelling of 622408 in words is "six hundred twenty-two thousand, four hundred eight".