634323671 has 4 divisors (see below), whose sum is σ = 651467592. Its totient is φ = 617179752.

The previous prime is 634323661. The next prime is 634323673. The reversal of 634323671 is 176323436.

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

It is a cyclic number.

It is not a de Polignac number, because 634323671 - 2¹⁴ = 634307287 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 (634323673) 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, 8571905 + ... + 8571978.

It is an arithmetic number, because the mean of its divisors is an integer number (162866898).

Almost surely, 2^634323671 is an apocalyptic number.

634323671 is a deficient number, since it is larger than the sum of its proper divisors (17143921).

634323671 is a wasteful number, since it uses less digits than its factorization.

634323671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17143920.

The product of its digits is 54432, while the sum is 35.

The square root of 634323671 is about 25185.7831127007. The cubic root of 634323671 is about 859.2185397162.

The spelling of 634323671 in words is "six hundred thirty-four million, three hundred twenty-three thousand, six hundred seventy-one".