1068638 has 8 divisors (see below), whose sum is σ = 1608600. Its totient is φ = 532440.

The previous prime is 1068631. The next prime is 1068677. The reversal of 1068638 is 8368601.

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

It is a super-2 number, since 2×1068638² = 2283974350088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068631) 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, 68 + ... + 1463.

It is an arithmetic number, because the mean of its divisors is an integer number (201075).

2^1068638 is an apocalyptic number.

1068638 is a deficient number, since it is larger than the sum of its proper divisors (539962).

1068638 is a wasteful number, since it uses less digits than its factorization.

1068638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1068638 is about 1033.7494860942. The cubic root of 1068638 is about 102.2374960549.

The spelling of 1068638 in words is "one million, sixty-eight thousand, six hundred thirty-eight".