1668995 has 12 divisors (see below), whose sum is σ = 2096976. Its totient is φ = 1275120.

The previous prime is 1668983. The next prime is 1669027. The reversal of 1668995 is 5998661.

It is not a de Polignac number, because 1668995 - 2⁸ = 1668739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2330 + ... + 2960.

It is an arithmetic number, because the mean of its divisors is an integer number (174748).

2^1668995 is an apocalyptic number.

1668995 is a deficient number, since it is larger than the sum of its proper divisors (427981).

1668995 is an equidigital number, since it uses as much as digits as its factorization.

1668995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 659 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The square root of 1668995 is about 1291.8958936385. The cubic root of 1668995 is about 118.6182953480.

The spelling of 1668995 in words is "one million, six hundred sixty-eight thousand, nine hundred ninety-five".