622906 has 4 divisors (see below), whose sum is σ = 934362. Its totient is φ = 311452.

The previous prime is 622901. The next prime is 622927. The reversal of 622906 is 609226.

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

It can be written as a sum of positive squares in only one way, i.e., 455625 + 167281 = 675^2 + 409^2 .

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 as a sum of consecutive naturals, namely, 155725 + ... + 155728.

2⁶²²⁹⁰⁶ is an apocalyptic number.

622906 is a deficient number, since it is larger than the sum of its proper divisors (311456).

622906 is a wasteful number, since it uses less digits than its factorization.

622906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311455.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 622906 is about 789.2439420103. The cubic root of 622906 is about 85.4032054403.

The spelling of 622906 in words is "six hundred twenty-two thousand, nine hundred six".