16693497 has 6 divisors (see below), whose sum is σ = 24112842. Its totient is φ = 11128992.

The previous prime is 16693493. The next prime is 16693499. The reversal of 16693497 is 79439661.

It can be written as a sum of positive squares in only one way, i.e., 14470416 + 2223081 = 3804^2 + 1491^2 .

It is not a de Polignac number, because 16693497 - 2² = 16693493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16693493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 927408 + ... + 927425.

It is an arithmetic number, because the mean of its divisors is an integer number (4018807).

Almost surely, 2^16693497 is an apocalyptic number.

It is an amenable number.

16693497 is a deficient number, since it is larger than the sum of its proper divisors (7419345).

16693497 is a wasteful number, since it uses less digits than its factorization.

16693497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854839 (or 1854836 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 16693497 is about 4085.7676145371. The cubic root of 16693497 is about 255.5734728949.

The spelling of 16693497 in words is "sixteen million, six hundred ninety-three thousand, four hundred ninety-seven".