631919674 has 4 divisors (see below), whose sum is σ = 947879514. Its totient is φ = 315959836.

The previous prime is 631919671. The next prime is 631919681. The reversal of 631919674 is 476919136.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 502073649 + 129846025 = 22407^2 + 11395^2 .

It is not an unprimeable number, because it can be changed into a prime (631919671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157979917 + ... + 157979920.

Almost surely, 2^631919674 is an apocalyptic number.

631919674 is a deficient number, since it is larger than the sum of its proper divisors (315959840).

631919674 is a wasteful number, since it uses less digits than its factorization.

631919674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315959839.

The product of its digits is 244944, while the sum is 46.

The square root of 631919674 is about 25138.0125308267. The cubic root of 631919674 is about 858.1317266867.

The spelling of 631919674 in words is "six hundred thirty-one million, nine hundred nineteen thousand, six hundred seventy-four".