16677765 has 96 divisors (see below), whose sum is σ = 34784640. Its totient is φ = 7547904.

The previous prime is 16677757. The next prime is 16677779. The reversal of 16677765 is 56777661.

It is not a de Polignac number, because 16677765 - 2³ = 16677757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16677765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 387834 + ... + 387876.

It is an arithmetic number, because the mean of its divisors is an integer number (362340).

Almost surely, 2^16677765 is an apocalyptic number.

16677765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16677765 is an abundant number, since it is smaller than the sum of its proper divisors (18106875).

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

16677765 is a wasteful number, since it uses less digits than its factorization.

16677765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 81 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The square root of 16677765 is about 4083.8419411138. The cubic root of 16677765 is about 255.4931632675.

It can be divided in two parts, 1 and 6677765, that added together give a palindrome (6677766).

The spelling of 16677765 in words is "sixteen million, six hundred seventy-seven thousand, seven hundred sixty-five".