16699397 has 16 divisors (see below), whose sum is σ = 19763520. Its totient is φ = 13993200.

The previous prime is 16699393. The next prime is 16699427. The reversal of 16699397 is 79399661.

16699397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16699397 - 2² = 16699393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16699391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23822 + ... + 24512.

It is an arithmetic number, because the mean of its divisors is an integer number (1235220).

Almost surely, 2^16699397 is an apocalyptic number.

It is an amenable number.

16699397 is a deficient number, since it is larger than the sum of its proper divisors (3064123).

16699397 is an equidigital number, since it uses as much as digits as its factorization.

16699397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 715 counting only the distinct ones).

The product of its digits is 551124, while the sum is 50.

The square root of 16699397 is about 4086.4895693003. The cubic root of 16699397 is about 255.6035785478.

The spelling of 16699397 in words is "sixteen million, six hundred ninety-nine thousand, three hundred ninety-seven".