630344717 has 4 divisors (see below), whose sum is σ = 667423836. Its totient is φ = 593265600.

The previous prime is 630344699. The next prime is 630344747. The reversal of 630344717 is 717443036.

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 363054916 + 267289801 = 19054^2 + 16349^2 .

It is a cyclic number.

It is not a de Polignac number, because 630344717 - 2²⁶ = 563235853 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 (630344747) 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, 18539534 + ... + 18539567.

It is an arithmetic number, because the mean of its divisors is an integer number (166855959).

Almost surely, 2^630344717 is an apocalyptic number.

It is an amenable number.

630344717 is a deficient number, since it is larger than the sum of its proper divisors (37079119).

630344717 is a wasteful number, since it uses less digits than its factorization.

630344717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37079118.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 630344717 is about 25106.6667839441. Note that the first 3 decimals coincide. The cubic root of 630344717 is about 857.4182156727.

The spelling of 630344717 in words is "six hundred thirty million, three hundred forty-four thousand, seven hundred seventeen".