16677639 has 48 divisors (see below), whose sum is σ = 28098720. Its totient is φ = 9434880.

The previous prime is 16677623. The next prime is 16677643. The reversal of 16677639 is 93677661.

16677639 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 7 + 639 = 666.

It is not a de Polignac number, because 16677639 - 2⁴ = 16677623 is a prime.

It is a super-2 number, since 2×16677639² = 556287285228642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16677594 and 16677603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16677239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106149 + ... + 106305.

It is an arithmetic number, because the mean of its divisors is an integer number (585390).

Almost surely, 2^16677639 is an apocalyptic number.

16677639 is a deficient number, since it is larger than the sum of its proper divisors (11421081).

16677639 is a wasteful number, since it uses less digits than its factorization.

16677639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 237 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 16677639 is about 4083.8265144347. The cubic root of 16677639 is about 255.4925198515.

The spelling of 16677639 in words is "sixteen million, six hundred seventy-seven thousand, six hundred thirty-nine".