16918697 has 2 divisors, whose sum is σ = 16918698. Its totient is φ = 16918696.

The previous prime is 16918673. The next prime is 16918703. The reversal of 16918697 is 79681961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11587216 + 5331481 = 3404^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 16918697 - 2²⁰ = 15870121 is a prime.

It is not a weakly prime, because it can be changed into another prime (16918897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8459348 + 8459349.

It is an arithmetic number, because the mean of its divisors is an integer number (8459349).

Almost surely, 2^16918697 is an apocalyptic number.

It is an amenable number.

16918697 is a deficient number, since it is larger than the sum of its proper divisors (1).

16918697 is an equidigital number, since it uses as much as digits as its factorization.

16918697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 47.

The square root of 16918697 is about 4113.2343721213. The cubic root of 16918697 is about 256.7175961978.

The spelling of 16918697 in words is "sixteen million, nine hundred eighteen thousand, six hundred ninety-seven".