14661990 has 144 divisors (see below), whose sum is σ = 47410272. Its totient is φ = 3068928.

The previous prime is 14661989. The next prime is 14662001. The reversal of 14661990 is 9916641.

14661990 is a `hidden beast` number, since 1 + 466 + 199 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 396252 + ... + 396288.

It is an arithmetic number, because the mean of its divisors is an integer number (329238).

Almost surely, 2^14661990 is an apocalyptic number.

14661990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 14661990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23705136).

14661990 is an abundant number, since it is smaller than the sum of its proper divisors (32748282).

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

14661990 is a wasteful number, since it uses less digits than its factorization.

14661990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 14661990 is about 3829.0978049666. The cubic root of 14661990 is about 244.7546620831.

It can be divided in two parts, 14661 and 990, that added together give a palindrome (15651).

The spelling of 14661990 in words is "fourteen million, six hundred sixty-one thousand, nine hundred ninety".