630022 has 4 divisors (see below), whose sum is σ = 945036. Its totient is φ = 315010.

The previous prime is 630017. The next prime is 630023. The reversal of 630022 is 220036.

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 629984 and 630011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157504 + ... + 157507.

It is an arithmetic number, because the mean of its divisors is an integer number (236259).

2⁶³⁰⁰²² is an apocalyptic number.

630022 is a deficient number, since it is larger than the sum of its proper divisors (315014).

630022 is a wasteful number, since it uses less digits than its factorization.

630022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315013.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 630022 is about 793.7392518957. The cubic root of 630022 is about 85.7271866825.

Adding to 630022 its reverse (220036), we get a palindrome (850058).

The spelling of 630022 in words is "six hundred thirty thousand, twenty-two".