16697474 has 4 divisors (see below), whose sum is σ = 25046214. Its totient is φ = 8348736.

The previous prime is 16697419. The next prime is 16697489. The reversal of 16697474 is 47479661.

16697474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47479661 = 1831 ⋅25931.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 3265249 = 3665^2 + 1807^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4174367 + ... + 4174370.

Almost surely, 2^16697474 is an apocalyptic number.

16697474 is a deficient number, since it is larger than the sum of its proper divisors (8348740).

16697474 is an equidigital number, since it uses as much as digits as its factorization.

16697474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8348739.

The product of its digits is 254016, while the sum is 44.

The square root of 16697474 is about 4086.2542750054. The cubic root of 16697474 is about 255.5937669250.

It can be divided in two parts, 16697 and 474, that added together give a palindrome (17171).

The spelling of 16697474 in words is "sixteen million, six hundred ninety-seven thousand, four hundred seventy-four".