630172933 has 4 divisors (see below), whose sum is σ = 678647788. Its totient is φ = 581698080.

The previous prime is 630172931. The next prime is 630172951. The reversal of 630172933 is 339271036.

630172933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 237221604 + 392951329 = 15402^2 + 19823^2 .

It is a cyclic number.

It is not a de Polignac number, because 630172933 - 2¹ = 630172931 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630172931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24237408 + ... + 24237433.

It is an arithmetic number, because the mean of its divisors is an integer number (169661947).

Almost surely, 2^630172933 is an apocalyptic number.

It is an amenable number.

630172933 is a deficient number, since it is larger than the sum of its proper divisors (48474855).

630172933 is a wasteful number, since it uses less digits than its factorization.

630172933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48474854.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 630172933 is about 25103.2454674689. The cubic root of 630172933 is about 857.3403196110.

The spelling of 630172933 in words is "six hundred thirty million, one hundred seventy-two thousand, nine hundred thirty-three".