634357137 has 4 divisors (see below), whose sum is σ = 845809520. Its totient is φ = 422904756.

The previous prime is 634357127. The next prime is 634357147. The reversal of 634357137 is 731753436.

It is a happy number.

634357137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (634357127) and next prime (634357147).

It is not a de Polignac number, because 634357137 - 2¹⁰ = 634356113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634357095 and 634357104.

It is not an unprimeable number, because it can be changed into a prime (634357127) 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, 105726187 + ... + 105726192.

It is an arithmetic number, because the mean of its divisors is an integer number (211452380).

Almost surely, 2^634357137 is an apocalyptic number.

It is an amenable number.

634357137 is a deficient number, since it is larger than the sum of its proper divisors (211452383).

634357137 is a wasteful number, since it uses less digits than its factorization.

634357137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211452382.

The product of its digits is 158760, while the sum is 39.

The square root of 634357137 is about 25186.4474866941. The cubic root of 634357137 is about 859.2336498266.

The spelling of 634357137 in words is "six hundred thirty-four million, three hundred fifty-seven thousand, one hundred thirty-seven".