630890 has 32 divisors (see below), whose sum is σ = 1282176. Its totient is φ = 221760.

The previous prime is 630871. The next prime is 630893. The reversal of 630890 is 98036.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (630893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2885 + ... + 3095.

It is an arithmetic number, because the mean of its divisors is an integer number (40068).

2⁶³⁰⁸⁹⁰ is an apocalyptic number.

630890 is an abundant number, since it is smaller than the sum of its proper divisors (651286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630890 is a wasteful number, since it uses less digits than its factorization.

630890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 630890 is about 794.2858427544. The cubic root of 630890 is about 85.7665382455.

The spelling of 630890 in words is "six hundred thirty thousand, eight hundred ninety".