13648491 has 6 divisors (see below), whose sum is σ = 19714500. Its totient is φ = 9098988.

The previous prime is 13648483. The next prime is 13648511. The reversal of 13648491 is 19484631.

13648491 is a `hidden beast` number, since 1 + 3 + 648 + 4 + 9 + 1 = 666.

It is not a de Polignac number, because 13648491 - 2³ = 13648483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13648391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 758241 + ... + 758258.

It is an arithmetic number, because the mean of its divisors is an integer number (3285750).

Almost surely, 2^13648491 is an apocalyptic number.

13648491 is a deficient number, since it is larger than the sum of its proper divisors (6066009).

13648491 is a wasteful number, since it uses less digits than its factorization.

13648491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516505 (or 1516502 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 13648491 is about 3694.3864172552. The cubic root of 13648491 is about 238.9799940071.

The spelling of 13648491 in words is "thirteen million, six hundred forty-eight thousand, four hundred ninety-one".