630145 has 8 divisors (see below), whose sum is σ = 761256. Its totient is φ = 500736.

The previous prime is 630127. The next prime is 630151. The reversal of 630145 is 541036.

It can be written as a sum of positive squares in 4 ways, for example, as 1296 + 628849 = 36^2 + 793^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 630145 - 2⁷ = 630017 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639 + ... + 1291.

It is an arithmetic number, because the mean of its divisors is an integer number (95157).

2⁶³⁰¹⁴⁵ is an apocalyptic number.

It is an amenable number.

630145 is a deficient number, since it is larger than the sum of its proper divisors (131111).

630145 is a wasteful number, since it uses less digits than its factorization.

630145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 630145 is about 793.8167294785. The cubic root of 630145 is about 85.7327651955.

The spelling of 630145 in words is "six hundred thirty thousand, one hundred forty-five".