16897765 has 8 divisors (see below), whose sum is σ = 20321568. Its totient is φ = 13488720.

The previous prime is 16897747. The next prime is 16897799. The reversal of 16897765 is 56779861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16897765 - 2¹³ = 16889573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987 + ... + 5896.

It is an arithmetic number, because the mean of its divisors is an integer number (2540196).

Almost surely, 2^16897765 is an apocalyptic number.

It is an amenable number.

16897765 is a deficient number, since it is larger than the sum of its proper divisors (3423803).

16897765 is an equidigital number, since it uses as much as digits as its factorization.

16897765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7379.

The product of its digits is 635040, while the sum is 49.

The square root of 16897765 is about 4110.6891149782. The cubic root of 16897765 is about 256.6116812181.

The spelling of 16897765 in words is "sixteen million, eight hundred ninety-seven thousand, seven hundred sixty-five".