631740873 has 8 divisors (see below), whose sum is σ = 842462368. Its totient is φ = 421089984.

The previous prime is 631740871. The next prime is 631740883. The reversal of 631740873 is 378047136.

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

It is not a de Polignac number, because 631740873 - 2¹ = 631740871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631740871) 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, 8961 + ... + 36657.

It is an arithmetic number, because the mean of its divisors is an integer number (105307796).

Almost surely, 2^631740873 is an apocalyptic number.

It is an amenable number.

631740873 is a deficient number, since it is larger than the sum of its proper divisors (210721495).

631740873 is a wasteful number, since it uses less digits than its factorization.

631740873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35303.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 631740873 is about 25134.4558922607. The cubic root of 631740873 is about 858.0507832320.

The spelling of 631740873 in words is "six hundred thirty-one million, seven hundred forty thousand, eight hundred seventy-three".