16668870 has 32 divisors (see below), whose sum is σ = 41089248. Its totient is φ = 4324608.

The previous prime is 16668853. The next prime is 16668887. The reversal of 16668870 is 7886661.

It is an interprime number because it is at equal distance from previous prime (16668853) and next prime (16668887).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6399 + ... + 8618.

It is an arithmetic number, because the mean of its divisors is an integer number (1284039).

Almost surely, 2^16668870 is an apocalyptic number.

16668870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16668870 is an abundant number, since it is smaller than the sum of its proper divisors (24420378).

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

16668870 is a wasteful number, since it uses less digits than its factorization.

16668870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15064.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 16668870 is about 4082.7527478406. The cubic root of 16668870 is about 255.4477332026.

The spelling of 16668870 in words is "sixteen million, six hundred sixty-eight thousand, eight hundred seventy".