665161002 has 48 divisors (see below), whose sum is σ = 1574052480. Its totient is φ = 201326400.

The previous prime is 665160973. The next prime is 665161031. The reversal of 665161002 is 200161566.

It is a happy number.

665161002 is a `hidden beast` number, since 6 + 651 + 6 + 1 + 0 + 0 + 2 = 666.

665161002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (665160973) and next prime (665161031).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242374 + ... + 245102.

It is an arithmetic number, because the mean of its divisors is an integer number (32792760).

Almost surely, 2^665161002 is an apocalyptic number.

665161002 is an abundant number, since it is smaller than the sum of its proper divisors (908891478).

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

665161002 is a wasteful number, since it uses less digits than its factorization.

665161002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979 (or 3976 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 665161002 is about 25790.7154224151. The cubic root of 665161002 is about 872.9223093871.

The spelling of 665161002 in words is "six hundred sixty-five million, one hundred sixty-one thousand, two".