1097638 has 8 divisors (see below), whose sum is σ = 1681632. Its totient is φ = 537096.

The previous prime is 1097633. The next prime is 1097651. The reversal of 1097638 is 8367901.

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

It is a super-3 number, since 3×1097638³ = 3967333013002494216, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097633) 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, 5745 + ... + 5932.

It is an arithmetic number, because the mean of its divisors is an integer number (210204).

2^1097638 is an apocalyptic number.

1097638 is a deficient number, since it is larger than the sum of its proper divisors (583994).

1097638 is a wasteful number, since it uses less digits than its factorization.

1097638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11726.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1097638 is about 1047.6822037240. The cubic root of 1097638 is about 103.1540723665.

The spelling of 1097638 in words is "one million, ninety-seven thousand, six hundred thirty-eight".