16679890 has 32 divisors (see below), whose sum is σ = 32348160. Its totient is φ = 6169344.

The previous prime is 16679869. The next prime is 16679893. The reversal of 16679890 is 9897661.

It is a self number, because there is not a number n which added to its sum of digits gives 16679890.

It is not an unprimeable number, because it can be changed into a prime (16679893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9199 + ... + 10861.

It is an arithmetic number, because the mean of its divisors is an integer number (1010880).

Almost surely, 2^16679890 is an apocalyptic number.

16679890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16679890 is a deficient number, since it is larger than the sum of its proper divisors (15668270).

16679890 is a wasteful number, since it uses less digits than its factorization.

16679890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 16679890 is about 4084.1021045023. The cubic root of 16679890 is about 255.5040140402.

The spelling of 16679890 in words is "sixteen million, six hundred seventy-nine thousand, eight hundred ninety".