634323437 has 4 divisors (see below), whose sum is σ = 691989216. Its totient is φ = 576657660.

The previous prime is 634323419. The next prime is 634323479. The reversal of 634323437 is 734323436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634323437 - 2⁶ = 634323373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634323397 and 634323406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634323407) 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, 28832873 + ... + 28832894.

It is an arithmetic number, because the mean of its divisors is an integer number (172997304).

Almost surely, 2^634323437 is an apocalyptic number.

It is an amenable number.

634323437 is a deficient number, since it is larger than the sum of its proper divisors (57665779).

634323437 is a wasteful number, since it uses less digits than its factorization.

634323437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57665778.

The product of its digits is 108864, while the sum is 35.

The square root of 634323437 is about 25185.7784672223. The cubic root of 634323437 is about 859.2184340619.

Subtracting 634323437 from its reverse (734323436), we obtain a palindrome (99999999).

The spelling of 634323437 in words is "six hundred thirty-four million, three hundred twenty-three thousand, four hundred thirty-seven".