16497967 has 4 divisors (see below), whose sum is σ = 16943896. Its totient is φ = 16052040.

The previous prime is 16497961. The next prime is 16497977. The reversal of 16497967 is 76979461.

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 16497967 - 2³ = 16497959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16497967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16497961) 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, 222909 + ... + 222982.

It is an arithmetic number, because the mean of its divisors is an integer number (4235974).

Almost surely, 2^16497967 is an apocalyptic number.

16497967 is a deficient number, since it is larger than the sum of its proper divisors (445929).

16497967 is an equidigital number, since it uses as much as digits as its factorization.

16497967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445928.

The product of its digits is 571536, while the sum is 49.

The square root of 16497967 is about 4061.7689496080. The cubic root of 16497967 is about 254.5717121838.

The spelling of 16497967 in words is "sixteen million, four hundred ninety-seven thousand, nine hundred sixty-seven".