13784697 has 6 divisors (see below), whose sum is σ = 19911242. Its totient is φ = 9189792.

The previous prime is 13784689. The next prime is 13784713. The reversal of 13784697 is 79648731.

It can be written as a sum of positive squares in only one way, i.e., 12257001 + 1527696 = 3501^2 + 1236^2 .

It is not a de Polignac number, because 13784697 - 2³ = 13784689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13784627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 765808 + ... + 765825.

Almost surely, 2^13784697 is an apocalyptic number.

It is an amenable number.

13784697 is a deficient number, since it is larger than the sum of its proper divisors (6126545).

13784697 is a wasteful number, since it uses less digits than its factorization.

13784697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531639 (or 1531636 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 13784697 is about 3712.7748383116. The cubic root of 13784697 is about 239.7723361899.

The spelling of 13784697 in words is "thirteen million, seven hundred eighty-four thousand, six hundred ninety-seven".