630785171 has 8 divisors (see below), whose sum is σ = 643619520. Its totient is φ = 617985472.

The previous prime is 630785137. The next prime is 630785173. The reversal of 630785171 is 171587036.

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 630785171 - 2¹⁸ = 630523027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630785173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29831 + ... + 46383.

It is an arithmetic number, because the mean of its divisors is an integer number (80452440).

Almost surely, 2^630785171 is an apocalyptic number.

630785171 is a deficient number, since it is larger than the sum of its proper divisors (12834349).

630785171 is a wasteful number, since it uses less digits than its factorization.

630785171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17325.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 630785171 is about 25115.4369064128. The cubic root of 630785171 is about 857.6178764534.

The spelling of 630785171 in words is "six hundred thirty million, seven hundred eighty-five thousand, one hundred seventy-one".