634611040 has 48 divisors (see below), whose sum is σ = 1713452832. Its totient is φ = 217580544.

The previous prime is 634610987. The next prime is 634611049. The reversal of 634611040 is 40116436.

It is a junction number, because it is equal to n+sod(n) for n = 634610996 and 634611014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634611049) 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, 282189 + ... + 284428.

It is an arithmetic number, because the mean of its divisors is an integer number (35696934).

Almost surely, 2^634611040 is an apocalyptic number.

It is an amenable number.

634611040 is an abundant number, since it is smaller than the sum of its proper divisors (1078841792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634611040 is a wasteful number, since it uses less digits than its factorization.

634611040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566639 (or 566631 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 634611040 is about 25191.4874511213. The cubic root of 634611040 is about 859.3482713274.

Adding to 634611040 its reverse (40116436), we get a palindrome (674727476).

The spelling of 634611040 in words is "six hundred thirty-four million, six hundred eleven thousand, forty".