20169965 has 8 divisors (see below), whose sum is σ = 25256448. Its totient is φ = 15434320.

The previous prime is 20169959. The next prime is 20169971. The reversal of 20169965 is 56996102.

It is an interprime number because it is at equal distance from previous prime (20169959) and next prime (20169971).

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

It is not a de Polignac number, because 20169965 - 2⁴ = 20169949 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, 87581 + ... + 87810.

It is an arithmetic number, because the mean of its divisors is an integer number (3157056).

Almost surely, 2^20169965 is an apocalyptic number.

It is an amenable number.

20169965 is a deficient number, since it is larger than the sum of its proper divisors (5086483).

20169965 is a wasteful number, since it uses less digits than its factorization.

20169965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175419.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 20169965 is about 4491.0984179820. The cubic root of 20169965 is about 272.2085203587.

The spelling of 20169965 in words is "twenty million, one hundred sixty-nine thousand, nine hundred sixty-five".