1668708 has 24 divisors (see below), whose sum is σ = 4326560. Its totient is φ = 556200.

The previous prime is 1668683. The next prime is 1668721. The reversal of 1668708 is 8078661.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 6.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7618 + ... + 7833.

2^1668708 is an apocalyptic number.

1668708 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1668708 is an abundant number, since it is smaller than the sum of its proper divisors (2657852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668708 is a wasteful number, since it uses less digits than its factorization.

1668708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15464 (or 15456 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1668708 is about 1291.7848118011. The cubic root of 1668708 is about 118.6114957666.

The spelling of 1668708 in words is "one million, six hundred sixty-eight thousand, seven hundred eight".