16900505 has 8 divisors (see below), whose sum is σ = 20752512. Its totient is φ = 13205808.

The previous prime is 16900493. The next prime is 16900511. The reversal of 16900505 is 50500961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16900505 - 2⁸ = 16900249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39089 + ... + 39518.

It is an arithmetic number, because the mean of its divisors is an integer number (2594064).

Almost surely, 2^16900505 is an apocalyptic number.

It is an amenable number.

16900505 is a deficient number, since it is larger than the sum of its proper divisors (3852007).

16900505 is an equidigital number, since it uses as much as digits as its factorization.

16900505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78655.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 16900505 is about 4111.0223789223. The cubic root of 16900505 is about 256.6255504686.

The spelling of 16900505 in words is "sixteen million, nine hundred thousand, five hundred five".