16689546 has 24 divisors (see below), whose sum is σ = 38288484. Its totient is φ = 5235840.

The previous prime is 16689523. The next prime is 16689593. The reversal of 16689546 is 64598661.

It can be written as a sum of positive squares in 2 ways, for example, as 16281225 + 408321 = 4035^2 + 639^2 .

It is a super-2 number, since 2×16689546² = 557081891372232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26965 + ... + 27576.

Almost surely, 2^16689546 is an apocalyptic number.

16689546 is an abundant number, since it is smaller than the sum of its proper divisors (21598938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16689546 is a wasteful number, since it uses less digits than its factorization.

16689546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54566 (or 54563 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 16689546 is about 4085.2840782496. The cubic root of 16689546 is about 255.5533083468.

The spelling of 16689546 in words is "sixteen million, six hundred eighty-nine thousand, five hundred forty-six".