622690 has 16 divisors (see below), whose sum is σ = 1137528. Its totient is φ = 245376.

The previous prime is 622669. The next prime is 622709. The reversal of 622690 is 96226.

It can be written as a sum of positive squares in 4 ways, for example, as 363609 + 259081 = 603^2 + 509^2 .

It is a super-3 number, since 3×622690³ = 724330759833327000, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304 + ... + 1156.

2⁶²²⁶⁹⁰ is an apocalyptic number.

622690 is a deficient number, since it is larger than the sum of its proper divisors (514838).

622690 is a wasteful number, since it uses less digits than its factorization.

622690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933.

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

The square root of 622690 is about 789.1070903242. The cubic root of 622690 is about 85.3933327763.

The spelling of 622690 in words is "six hundred twenty-two thousand, six hundred ninety".