16980555 has 32 divisors (see below), whose sum is σ = 28740096. Its totient is φ = 8543744.

The previous prime is 16980541. The next prime is 16980559. The reversal of 16980555 is 55508961.

It is a cyclic number.

It is not a de Polignac number, because 16980555 - 2⁷ = 16980427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16980559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28339 + ... + 28931.

It is an arithmetic number, because the mean of its divisors is an integer number (898128).

Almost surely, 2^16980555 is an apocalyptic number.

16980555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16980555 is a deficient number, since it is larger than the sum of its proper divisors (11759541).

16980555 is a wasteful number, since it uses less digits than its factorization.

16980555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707.

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 16980555 is about 4120.7468983183. The cubic root of 16980555 is about 257.0300852505.

The spelling of 16980555 in words is "sixteen million, nine hundred eighty thousand, five hundred fifty-five".