622730 has 8 divisors (see below), whose sum is σ = 1120932. Its totient is φ = 249088.

The previous prime is 622729. The next prime is 622751. The reversal of 622730 is 37226.

It can be written as a sum of positive squares in 2 ways, for example, as 609961 + 12769 = 781^2 + 113^2 .

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31127 + ... + 31146.

2⁶²²⁷³⁰ is an apocalyptic number.

622730 is a deficient number, since it is larger than the sum of its proper divisors (498202).

622730 is a wasteful number, since it uses less digits than its factorization.

622730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62280.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 622730 is about 789.1324350196. The cubic root of 622730 is about 85.3951612196.

Subtracting from 622730 its product of nonzero digits (504), we obtain a palindrome (622226).

Adding to 622730 its reverse (37226), we get a palindrome (659956).

The spelling of 622730 in words is "six hundred twenty-two thousand, seven hundred thirty".