632649859 has 4 divisors (see below), whose sum is σ = 665947240. Its totient is φ = 599352480.

The previous prime is 632649851. The next prime is 632649893. The reversal of 632649859 is 958946236.

632649859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 632649859 - 2³ = 632649851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632649851) 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, 16648662 + ... + 16648699.

It is an arithmetic number, because the mean of its divisors is an integer number (166486810).

Almost surely, 2^632649859 is an apocalyptic number.

632649859 is a deficient number, since it is larger than the sum of its proper divisors (33297381).

632649859 is a wasteful number, since it uses less digits than its factorization.

632649859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33297380.

The product of its digits is 2799360, while the sum is 52.

The square root of 632649859 is about 25152.5318606299. The cubic root of 632649859 is about 858.4621240201.

The spelling of 632649859 in words is "six hundred thirty-two million, six hundred forty-nine thousand, eight hundred fifty-nine".