13016649 has 4 divisors (see below), whose sum is σ = 17355536. Its totient is φ = 8677764.

The previous prime is 13016623. The next prime is 13016677. The reversal of 13016649 is 94661031.

13016649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13016649 - 2¹² = 13012553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13016699) 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, 2169439 + ... + 2169444.

It is an arithmetic number, because the mean of its divisors is an integer number (4338884).

Almost surely, 2^13016649 is an apocalyptic number.

It is an amenable number.

13016649 is a deficient number, since it is larger than the sum of its proper divisors (4338887).

13016649 is an equidigital number, since it uses as much as digits as its factorization.

13016649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338886.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13016649 is about 3607.8593376128. The cubic root of 13016649 is about 235.2338038264.

The spelling of 13016649 in words is "thirteen million, sixteen thousand, six hundred forty-nine".