68563634 has 8 divisors (see below), whose sum is σ = 104531628. Its totient is φ = 33719760.

The previous prime is 68563619. The next prime is 68563643. The reversal of 68563634 is 43636586.

It can be written as a sum of positive squares in 2 ways, for example, as 68145025 + 418609 = 8255^2 + 647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 68563591 and 68563600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280877 + ... + 281120.

Almost surely, 2^68563634 is an apocalyptic number.

68563634 is a deficient number, since it is larger than the sum of its proper divisors (35967994).

68563634 is a wasteful number, since it uses less digits than its factorization.

68563634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562060.

The product of its digits is 311040, while the sum is 41.

The square root of 68563634 is about 8280.3160567698. The cubic root of 68563634 is about 409.2901339453.

The spelling of 68563634 in words is "sixty-eight million, five hundred sixty-three thousand, six hundred thirty-four".