1668117 has 8 divisors (see below), whose sum is σ = 2426400. Its totient is φ = 1010960.

The previous prime is 1668113. The next prime is 1668119. The reversal of 1668117 is 7118661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1668117 - 2² = 1668113 is a prime.

It is a super-2 number, since 2×1668117² = 5565228651378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25242 + ... + 25307.

It is an arithmetic number, because the mean of its divisors is an integer number (303300).

2^1668117 is an apocalyptic number.

It is an amenable number.

1668117 is a deficient number, since it is larger than the sum of its proper divisors (758283).

1668117 is a wasteful number, since it uses less digits than its factorization.

1668117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50563.

The product of its digits is 2016, while the sum is 30.

The square root of 1668117 is about 1291.5560382732. The cubic root of 1668117 is about 118.5974913849.

The spelling of 1668117 in words is "one million, six hundred sixty-eight thousand, one hundred seventeen".