630437 has 4 divisors (see below), whose sum is σ = 633420. Its totient is φ = 627456.

The previous prime is 630433. The next prime is 630451. The reversal of 630437 is 734036.

It is a Cunningham number, because it is equal to 794²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 586756 + 43681 = 766^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 630437 - 2² = 630433 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148 + ... + 1605.

It is an arithmetic number, because the mean of its divisors is an integer number (158355).

2⁶³⁰⁴³⁷ is an apocalyptic number.

It is an amenable number.

630437 is a deficient number, since it is larger than the sum of its proper divisors (2983).

630437 is a wasteful number, since it uses less digits than its factorization.

630437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 630437 is about 794.0006297227. Note that the first 3 decimals coincide. The cubic root of 630437 is about 85.7460055882.

The spelling of 630437 in words is "six hundred thirty thousand, four hundred thirty-seven".