13066388 has 6 divisors (see below), whose sum is σ = 22866186. Its totient is φ = 6533192.

The previous prime is 13066381. The next prime is 13066399. The reversal of 13066388 is 88366031.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7739524 + 5326864 = 2782^2 + 2308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13066381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1633295 + ... + 1633302.

It is an arithmetic number, because the mean of its divisors is an integer number (3811031).

Almost surely, 2^13066388 is an apocalyptic number.

It is an amenable number.

13066388 is a deficient number, since it is larger than the sum of its proper divisors (9799798).

13066388 is a wasteful number, since it uses less digits than its factorization.

13066388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266601 (or 3266599 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 13066388 is about 3614.7459108491. The cubic root of 13066388 is about 235.5330468122.

The spelling of 13066388 in words is "thirteen million, sixty-six thousand, three hundred eighty-eight".