622931 has 4 divisors (see below), whose sum is σ = 659592. Its totient is φ = 586272.

The previous prime is 622927. The next prime is 622943. The reversal of 622931 is 139226.

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

It is a cyclic number.

It is not a de Polignac number, because 622931 - 2² = 622927 is a prime.

It is a super-2 number, since 2×622931² = 776086061522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 622897 and 622906.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622931.

It is not an unprimeable number, because it can be changed into a prime (622901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18305 + ... + 18338.

It is an arithmetic number, because the mean of its divisors is an integer number (164898).

2⁶²²⁹³¹ is an apocalyptic number.

622931 is a deficient number, since it is larger than the sum of its proper divisors (36661).

622931 is a wasteful number, since it uses less digits than its factorization.

622931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36660.

The product of its digits is 648, while the sum is 23.

The square root of 622931 is about 789.2597797937. The cubic root of 622931 is about 85.4043479624.

The spelling of 622931 in words is "six hundred twenty-two thousand, nine hundred thirty-one".