16772765 has 4 divisors (see below), whose sum is σ = 20127324. Its totient is φ = 13418208.

The previous prime is 16772753. The next prime is 16772771. The reversal of 16772765 is 56727761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10106041 + 6666724 = 3179^2 + 2582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16772765 is a prime.

It is a Duffinian number.

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, 1677272 + ... + 1677281.

It is an arithmetic number, because the mean of its divisors is an integer number (5031831).

Almost surely, 2^16772765 is an apocalyptic number.

It is an amenable number.

16772765 is a deficient number, since it is larger than the sum of its proper divisors (3354559).

16772765 is an equidigital number, since it uses as much as digits as its factorization.

16772765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354558.

The product of its digits is 123480, while the sum is 41.

The square root of 16772765 is about 4095.4566289976. The cubic root of 16772765 is about 255.9773590410.

The spelling of 16772765 in words is "sixteen million, seven hundred seventy-two thousand, seven hundred sixty-five".