634749000063 has 4 divisors (see below), whose sum is σ = 846332000088. Its totient is φ = 423166000040.

The previous prime is 634749000059. The next prime is 634749000113. The reversal of 634749000063 is 360000947436.

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

It is a cyclic number.

It is not a de Polignac number, because 634749000063 - 2² = 634749000059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634748999979 and 634749000024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634749000163) 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, 105791500008 + ... + 105791500013.

It is an arithmetic number, because the mean of its divisors is an integer number (211583000022).

Almost surely, 2^634749000063 is an apocalyptic number.

634749000063 is a deficient number, since it is larger than the sum of its proper divisors (211583000025).

634749000063 is a wasteful number, since it uses less digits than its factorization.

634749000063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211583000024.

The product of its (nonzero) digits is 326592, while the sum is 42.

Adding to 634749000063 its reverse (360000947436), we get a palindrome (994749947499).

The spelling of 634749000063 in words is "six hundred thirty-four billion, seven hundred forty-nine million, sixty-three", and thus it is an aban number.