13662047 has 4 divisors (see below), whose sum is σ = 15613776. Its totient is φ = 11710320.

The previous prime is 13662043. The next prime is 13662053. The reversal of 13662047 is 74026631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13662047 - 2² = 13662043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13662043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975854 + ... + 975867.

It is an arithmetic number, because the mean of its divisors is an integer number (3903444).

Almost surely, 2^13662047 is an apocalyptic number.

13662047 is a deficient number, since it is larger than the sum of its proper divisors (1951729).

13662047 is an equidigital number, since it uses as much as digits as its factorization.

13662047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951728.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 13662047 is about 3696.2206373538. The cubic root of 13662047 is about 239.0590879972.

Adding to 13662047 its reverse (74026631), we get a palindrome (87688678).

The spelling of 13662047 in words is "thirteen million, six hundred sixty-two thousand, forty-seven".