16679501 has 4 divisors (see below), whose sum is σ = 17034432. Its totient is φ = 16324572.

The previous prime is 16679491. The next prime is 16679503. The reversal of 16679501 is 10597661.

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: 10597661 = 521 ⋅20341.

It is a cyclic number.

It is not a de Polignac number, because 16679501 - 2¹⁰ = 16678477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16679503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177395 + ... + 177488.

It is an arithmetic number, because the mean of its divisors is an integer number (4258608).

Almost surely, 2^16679501 is an apocalyptic number.

It is an amenable number.

16679501 is a deficient number, since it is larger than the sum of its proper divisors (354931).

16679501 is an equidigital number, since it uses as much as digits as its factorization.

16679501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354930.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 16679501 is about 4084.0544805377. The cubic root of 16679501 is about 255.5020277794.

The spelling of 16679501 in words is "sixteen million, six hundred seventy-nine thousand, five hundred one".