634983427 has 4 divisors (see below), whose sum is σ = 683828320. Its totient is φ = 586138536.

The previous prime is 634983421. The next prime is 634983463. The reversal of 634983427 is 724389436.

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 634983427 - 2⁷ = 634983299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634983421) 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, 24422427 + ... + 24422452.

It is an arithmetic number, because the mean of its divisors is an integer number (170957080).

Almost surely, 2^634983427 is an apocalyptic number.

634983427 is a deficient number, since it is larger than the sum of its proper divisors (48844893).

634983427 is a wasteful number, since it uses less digits than its factorization.

634983427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48844892.

The product of its digits is 870912, while the sum is 46.

The square root of 634983427 is about 25198.8774948409. The cubic root of 634983427 is about 859.5163257373.

The spelling of 634983427 in words is "six hundred thirty-four million, nine hundred eighty-three thousand, four hundred twenty-seven".