16504879 has 4 divisors (see below), whose sum is σ = 16615800. Its totient is φ = 16393960.

The previous prime is 16504867. The next prime is 16504907. The reversal of 16504879 is 97840561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16504879 - 2¹³ = 16496687 is a prime.

It is a super-3 number, since 3×16504879³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16504079) 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, 55237 + ... + 55534.

It is an arithmetic number, because the mean of its divisors is an integer number (4153950).

Almost surely, 2^16504879 is an apocalyptic number.

16504879 is a deficient number, since it is larger than the sum of its proper divisors (110921).

16504879 is a wasteful number, since it uses less digits than its factorization.

16504879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110920.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 16504879 is about 4062.6197213128. The cubic root of 16504879 is about 254.6072590687.

The spelling of 16504879 in words is "sixteen million, five hundred four thousand, eight hundred seventy-nine".