13666995 has 32 divisors (see below), whose sum is σ = 24675840. Its totient is φ = 7175520.

The previous prime is 13666979. The next prime is 13666999. The reversal of 13666995 is 59966631.

It is not a de Polignac number, because 13666995 - 2⁴ = 13666979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13666995.

It is not an unprimeable number, because it can be changed into a prime (13666999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8290 + ... + 9800.

It is an arithmetic number, because the mean of its divisors is an integer number (771120).

Almost surely, 2^13666995 is an apocalyptic number.

13666995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13666995 is a deficient number, since it is larger than the sum of its proper divisors (11008845).

13666995 is a wasteful number, since it uses less digits than its factorization.

13666995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592 (or 1586 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 13666995 is about 3696.8899090993. The cubic root of 13666995 is about 239.0879446197.

The spelling of 13666995 in words is "thirteen million, six hundred sixty-six thousand, nine hundred ninety-five".