622457 has 8 divisors (see below), whose sum is σ = 689472. Its totient is φ = 557200.

The previous prime is 622423. The next prime is 622477. The reversal of 622457 is 754226.

622457 is nontrivially palindromic in base 16.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 622457 - 2¹² = 618361 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (86184).

2⁶²²⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

622457 is a deficient number, since it is larger than the sum of its proper divisors (67015).

622457 is a wasteful number, since it uses less digits than its factorization.

622457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879.

The product of its digits is 3360, while the sum is 26.

The square root of 622457 is about 788.9594412896. The cubic root of 622457 is about 85.3826805369.

Subtracting 622457 from its reverse (754226), we obtain a square (131769 = 363²).

The spelling of 622457 in words is "six hundred twenty-two thousand, four hundred fifty-seven".