634140512 has 48 divisors (see below), whose sum is σ = 1266344352. Its totient is φ = 312560640.

The previous prime is 634140509. The next prime is 634140517. The reversal of 634140512 is 215041436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634140517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387388 + ... + 1387844.

It is an arithmetic number, because the mean of its divisors is an integer number (26382174).

Almost surely, 2^634140512 is an apocalyptic number.

It is an amenable number.

634140512 is a deficient number, since it is larger than the sum of its proper divisors (632203840).

634140512 is a wasteful number, since it uses less digits than its factorization.

634140512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 634140512 is about 25182.1466916544. The cubic root of 634140512 is about 859.1358328558.

Adding to 634140512 its reverse (215041436), we get a palindrome (849181948).

The spelling of 634140512 in words is "six hundred thirty-four million, one hundred forty thousand, five hundred twelve".