622407 has 4 divisors (see below), whose sum is σ = 829880. Its totient is φ = 414936.

The previous prime is 622399. The next prime is 622423. The reversal of 622407 is 704226.

It is a happy number.

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

It is not a de Polignac number, because 622407 - 2³ = 622399 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103732 + ... + 103737.

It is an arithmetic number, because the mean of its divisors is an integer number (207470).

2⁶²²⁴⁰⁷ is an apocalyptic number.

622407 is a deficient number, since it is larger than the sum of its proper divisors (207473).

622407 is a wasteful number, since it uses less digits than its factorization.

622407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207472.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 622407 is about 788.9277533463. The cubic root of 622407 is about 85.3803943023.

The spelling of 622407 in words is "six hundred twenty-two thousand, four hundred seven".