635403412 has 24 divisors (see below), whose sum is σ = 1271422656. Its totient is φ = 272183808.

The previous prime is 635403409. The next prime is 635403413. The reversal of 635403412 is 214304536.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635403413) 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, 72963 + ... + 81205.

It is an arithmetic number, because the mean of its divisors is an integer number (52975944).

Almost surely, 2^635403412 is an apocalyptic number.

It is an amenable number.

635403412 is an abundant number, since it is smaller than the sum of its proper divisors (636019244).

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

635403412 is a wasteful number, since it uses less digits than its factorization.

635403412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11007 (or 11005 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 635403412 is about 25207.2095242611. The cubic root of 635403412 is about 859.7057818143.

Adding to 635403412 its reverse (214304536), we get a palindrome (849707948).

The spelling of 635403412 in words is "six hundred thirty-five million, four hundred three thousand, four hundred twelve".