16696647 has 24 divisors (see below), whose sum is σ = 26477568. Its totient is φ = 10054800.

The previous prime is 16696639. The next prime is 16696661. The reversal of 16696647 is 74669661.

It is a happy number.

It is not a de Polignac number, because 16696647 - 2³ = 16696639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16696627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18468 + ... + 19350.

It is an arithmetic number, because the mean of its divisors is an integer number (1103232).

Almost surely, 2^16696647 is an apocalyptic number.

16696647 is a deficient number, since it is larger than the sum of its proper divisors (9780921).

16696647 is a wasteful number, since it uses less digits than its factorization.

16696647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091 (or 1088 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 16696647 is about 4086.1530808329. The cubic root of 16696647 is about 255.5895471344.

The spelling of 16696647 in words is "sixteen million, six hundred ninety-six thousand, six hundred forty-seven".