1668958 has 16 divisors (see below), whose sum is σ = 2674944. Its totient is φ = 778240.

The previous prime is 1668943. The next prime is 1668971. The reversal of 1668958 is 8598661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6366 + ... + 6622.

It is an arithmetic number, because the mean of its divisors is an integer number (167184).

2^1668958 is an apocalyptic number.

1668958 is a deficient number, since it is larger than the sum of its proper divisors (1005986).

1668958 is a wasteful number, since it uses less digits than its factorization.

1668958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467.

The product of its digits is 103680, while the sum is 43.

The square root of 1668958 is about 1291.8815735198. The cubic root of 1668958 is about 118.6174187907.

The spelling of 1668958 in words is "one million, six hundred sixty-eight thousand, nine hundred fifty-eight".