13748985 has 12 divisors (see below), whose sum is σ = 23831652. Its totient is φ = 7332768.

The previous prime is 13748939. The next prime is 13748993. The reversal of 13748985 is 58984731.

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 11614464 = 1461^2 + 3408^2 .

It is not a de Polignac number, because 13748985 - 2¹⁰ = 13747961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 305533 = 13748985 / (1 + 3 + 7 + 4 + 8 + 9 + 8 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13748985.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152722 + ... + 152811.

It is an arithmetic number, because the mean of its divisors is an integer number (1985971).

Almost surely, 2^13748985 is an apocalyptic number.

13748985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13748985 is a deficient number, since it is larger than the sum of its proper divisors (10082667).

13748985 is a wasteful number, since it uses less digits than its factorization.

13748985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305544 (or 305541 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 13748985 is about 3707.9623784499. The cubic root of 13748985 is about 239.5650978097.

The spelling of 13748985 in words is "thirteen million, seven hundred forty-eight thousand, nine hundred eighty-five".