630746 has 4 divisors (see below), whose sum is σ = 946122. Its totient is φ = 315372.

The previous prime is 630737. The next prime is 630797. The reversal of 630746 is 647036.

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

It can be written as a sum of positive squares in only one way, i.e., 474721 + 156025 = 689^2 + 395^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157685 + ... + 157688.

2⁶³⁰⁷⁴⁶ is an apocalyptic number.

630746 is a deficient number, since it is larger than the sum of its proper divisors (315376).

630746 is a wasteful number, since it uses less digits than its factorization.

630746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315375.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 630746 is about 794.1951901139. The cubic root of 630746 is about 85.7600123740.

Subtracting 630746 from its reverse (647036), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 630746 in words is "six hundred thirty thousand, seven hundred forty-six".