16724913 has 4 divisors (see below), whose sum is σ = 22299888. Its totient is φ = 11149940.

The previous prime is 16724879. The next prime is 16724971. The reversal of 16724913 is 31942761.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31942761 = 3 ⋅10647587.

It is a cyclic number.

It is not a de Polignac number, because 16724913 - 2¹⁴ = 16708529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16724993) 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, 2787483 + ... + 2787488.

It is an arithmetic number, because the mean of its divisors is an integer number (5574972).

Almost surely, 2^16724913 is an apocalyptic number.

It is an amenable number.

16724913 is a deficient number, since it is larger than the sum of its proper divisors (5574975).

16724913 is an equidigital number, since it uses as much as digits as its factorization.

16724913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574974.

The product of its digits is 9072, while the sum is 33.

The square root of 16724913 is about 4089.6103726394. The cubic root of 16724913 is about 255.7336962591.

The spelling of 16724913 in words is "sixteen million, seven hundred twenty-four thousand, nine hundred thirteen".