16775644 has 12 divisors (see below), whose sum is σ = 29398600. Its totient is φ = 8376048.

The previous prime is 16775639. The next prime is 16775653. The reversal of 16775644 is 44657761.

It is a super-2 number, since 2×16775644² = 562844463229472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16775597 and 16775606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787 + ... + 5845.

Almost surely, 2^16775644 is an apocalyptic number.

It is an amenable number.

16775644 is a deficient number, since it is larger than the sum of its proper divisors (12622956).

16775644 is a wasteful number, since it uses less digits than its factorization.

16775644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892 (or 5890 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 16775644 is about 4095.8081009735. The cubic root of 16775644 is about 255.9920041448.

The spelling of 16775644 in words is "sixteen million, seven hundred seventy-five thousand, six hundred forty-four".