16699297 has 6 divisors (see below), whose sum is σ = 17256354. Its totient is φ = 16159680.

The previous prime is 16699289. The next prime is 16699303. The reversal of 16699297 is 79299661.

It can be written as a sum of positive squares in only one way, i.e., 10394176 + 6305121 = 3224^2 + 2511^2 .

It is not a de Polignac number, because 16699297 - 2³ = 16699289 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 16699297.

It is not an unprimeable number, because it can be changed into a prime (16699217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7728 + ... + 9649.

It is an arithmetic number, because the mean of its divisors is an integer number (2876059).

Almost surely, 2^16699297 is an apocalyptic number.

It is an amenable number.

16699297 is a deficient number, since it is larger than the sum of its proper divisors (557057).

16699297 is an equidigital number, since it uses as much as digits as its factorization.

16699297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17439 (or 17408 counting only the distinct ones).

The product of its digits is 367416, while the sum is 49.

The square root of 16699297 is about 4086.4773338415. The cubic root of 16699297 is about 255.6030683416.

The spelling of 16699297 in words is "sixteen million, six hundred ninety-nine thousand, two hundred ninety-seven".