12949668 has 18 divisors (see below), whose sum is σ = 32733974. Its totient is φ = 4316544.

The previous prime is 12949639. The next prime is 12949679. The reversal of 12949668 is 86694921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8714304 + 4235364 = 2952^2 + 2058^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179821 + ... + 179892.

Almost surely, 2^12949668 is an apocalyptic number.

12949668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12949668 is an abundant number, since it is smaller than the sum of its proper divisors (19784306).

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

12949668 is a wasteful number, since it uses less digits than its factorization.

12949668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359723 (or 359718 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 12949668 is about 3598.5647138825. The cubic root of 12949668 is about 234.8296214855.

The spelling of 12949668 in words is "twelve million, nine hundred forty-nine thousand, six hundred sixty-eight".