665162163 has 6 divisors (see below), whose sum is σ = 960789804. Its totient is φ = 443441436.

The previous prime is 665162161. The next prime is 665162167. The reversal of 665162163 is 361261566.

665162163 is a `hidden beast` number, since 66 + 516 + 21 + 63 = 666.

It is not a de Polignac number, because 665162163 - 2¹ = 665162161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665162161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36953445 + ... + 36953462.

It is an arithmetic number, because the mean of its divisors is an integer number (160131634).

Almost surely, 2^665162163 is an apocalyptic number.

665162163 is a deficient number, since it is larger than the sum of its proper divisors (295627641).

665162163 is a wasteful number, since it uses less digits than its factorization.

665162163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73906913 (or 73906910 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 665162163 is about 25790.7379305052. The cubic root of 665162163 is about 872.9228172652.

The spelling of 665162163 in words is "six hundred sixty-five million, one hundred sixty-two thousand, one hundred sixty-three".