626906 has 12 divisors (see below), whose sum is σ = 1094058. Its totient is φ = 268632.

The previous prime is 626887. The next prime is 626917. The reversal of 626906 is 609626.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 625681 + 1225 = 791^2 + 35^2 .

It is a super-2 number, since 2×626906² = 786022265672, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3101 + ... + 3296.

2⁶²⁶⁹⁰⁶ is an apocalyptic number.

626906 is a deficient number, since it is larger than the sum of its proper divisors (467152).

626906 is a wasteful number, since it uses less digits than its factorization.

626906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6413 (or 6406 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 626906 is about 791.7739576420. The cubic root of 626906 is about 85.5856215113.

The spelling of 626906 in words is "six hundred twenty-six thousand, nine hundred six".