13950666 has 12 divisors (see below), whose sum is σ = 30226482. Its totient is φ = 4650216.

The previous prime is 13950649. The next prime is 13950667. The reversal of 13950666 is 66605931.

It can be written as a sum of positive squares in only one way, i.e., 13950225 + 441 = 3735^2 + 21^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13950666.

It is not an unprimeable number, because it can be changed into a prime (13950667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 387501 + ... + 387536.

Almost surely, 2^13950666 is an apocalyptic number.

13950666 is an abundant number, since it is smaller than the sum of its proper divisors (16275816).

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

13950666 is a wasteful number, since it uses less digits than its factorization.

13950666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775045 (or 775042 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 13950666 is about 3735.0590356780. The cubic root of 13950666 is about 240.7307933294.

It can be divided in two parts, 139 and 50666, that added together give a palindrome (50805).

The spelling of 13950666 in words is "thirteen million, nine hundred fifty thousand, six hundred sixty-six".