16697427 has 4 divisors (see below), whose sum is σ = 22263240. Its totient is φ = 11131616.

The previous prime is 16697419. The next prime is 16697489. The reversal of 16697427 is 72479661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16697427 - 2³ = 16697419 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16697497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2782902 + ... + 2782907.

It is an arithmetic number, because the mean of its divisors is an integer number (5565810).

Almost surely, 2^16697427 is an apocalyptic number.

16697427 is a deficient number, since it is larger than the sum of its proper divisors (5565813).

16697427 is an equidigital number, since it uses as much as digits as its factorization.

16697427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565812.

The product of its digits is 127008, while the sum is 42.

The square root of 16697427 is about 4086.2485240132. The cubic root of 16697427 is about 255.5935271100.

The spelling of 16697427 in words is "sixteen million, six hundred ninety-seven thousand, four hundred twenty-seven".