16990755 has 16 divisors (see below), whose sum is σ = 27330720. Its totient is φ = 9013248.

The previous prime is 16990751. The next prime is 16990783. The reversal of 16990755 is 55709961.

It is not a de Polignac number, because 16990755 - 2² = 16990751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16990751) 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, 40 + ... + 5829.

It is an arithmetic number, because the mean of its divisors is an integer number (1708170).

Almost surely, 2^16990755 is an apocalyptic number.

16990755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16990755 is a deficient number, since it is larger than the sum of its proper divisors (10339965).

16990755 is a wasteful number, since it uses less digits than its factorization.

16990755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 16990755 is about 4121.9843522265. The cubic root of 16990755 is about 257.0815398329.

The spelling of 16990755 in words is "sixteen million, nine hundred ninety thousand, seven hundred fifty-five".