634436463 has 4 divisors (see below), whose sum is σ = 845915288. Its totient is φ = 422957640.

The previous prime is 634436443. The next prime is 634436489. The reversal of 634436463 is 364634436.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 634436463 - 2¹³ = 634428271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634436423) 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, 105739408 + ... + 105739413.

It is an arithmetic number, because the mean of its divisors is an integer number (211478822).

Almost surely, 2^634436463 is an apocalyptic number.

634436463 is a deficient number, since it is larger than the sum of its proper divisors (211478825).

634436463 is a wasteful number, since it uses less digits than its factorization.

634436463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211478824.

The product of its digits is 373248, while the sum is 39.

The square root of 634436463 is about 25188.0222129488. The cubic root of 634436463 is about 859.2694638939.

The spelling of 634436463 in words is "six hundred thirty-four million, four hundred thirty-six thousand, four hundred sixty-three".