16690455 has 56 divisors (see below), whose sum is σ = 31740720. Its totient is φ = 8398080.

The previous prime is 16690423. The next prime is 16690459. The reversal of 16690455 is 55409661.

It is not a de Polignac number, because 16690455 - 2⁵ = 16690423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16690459) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 69135 + ... + 69375.

Almost surely, 2^16690455 is an apocalyptic number.

16690455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16690455 is a deficient number, since it is larger than the sum of its proper divisors (15050265).

16690455 is an equidigital number, since it uses as much as digits as its factorization.

16690455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 16690455 is about 4085.3953297080. The cubic root of 16690455 is about 255.5579478527.

The spelling of 16690455 in words is "sixteen million, six hundred ninety thousand, four hundred fifty-five".