14001660 has 144 divisors (see below), whose sum is σ = 45741696. Its totient is φ = 3592512.

The previous prime is 14001653. The next prime is 14001661. The reversal of 14001660 is 6610041.

14001660 is a `hidden beast` number, since 1 + 4 + 0 + 0 + 1 + 660 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14001661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208947 + ... + 209013.

Almost surely, 2^14001660 is an apocalyptic number.

14001660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14001660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22870848).

14001660 is an abundant number, since it is smaller than the sum of its proper divisors (31740036).

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

14001660 is a wasteful number, since it uses less digits than its factorization.

14001660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 14001660 is about 3741.8792070295. The cubic root of 14001660 is about 241.0237518414.

The spelling of 14001660 in words is "fourteen million, one thousand, six hundred sixty".