634980383 has 4 divisors (see below), whose sum is σ = 635259120. Its totient is φ = 634701648.

The previous prime is 634980331. The next prime is 634980391. The reversal of 634980383 is 383089436.

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 634980383 - 2⁸ = 634980127 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 (634980883) 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, 135923 + ... + 140516.

It is an arithmetic number, because the mean of its divisors is an integer number (158814780).

Almost surely, 2^634980383 is an apocalyptic number.

634980383 is a deficient number, since it is larger than the sum of its proper divisors (278737).

634980383 is a wasteful number, since it uses less digits than its factorization.

634980383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278736.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 634980383 is about 25198.8170952527. The cubic root of 634980383 is about 859.5149522779.

The spelling of 634980383 in words is "six hundred thirty-four million, nine hundred eighty thousand, three hundred eighty-three".