968638 has 8 divisors (see below), whose sum is σ = 1585080. Its totient is φ = 440280.

The previous prime is 968593. The next prime is 968641. The reversal of 968638 is 836869.

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

It is a self number, because there is not a number n which added to its sum of digits gives 968638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21993 + ... + 22036.

It is an arithmetic number, because the mean of its divisors is an integer number (198135).

2⁹⁶⁸⁶³⁸ is an apocalyptic number.

968638 is a deficient number, since it is larger than the sum of its proper divisors (616442).

968638 is a wasteful number, since it uses less digits than its factorization.

968638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44042.

The product of its digits is 62208, while the sum is 40.

The square root of 968638 is about 984.1940865500. The cubic root of 968638 is about 98.9434769006.

Subtracting from 968638 its reverse (836869), we obtain a square (131769 = 363²).

The spelling of 968638 in words is "nine hundred sixty-eight thousand, six hundred thirty-eight".