665878883 has 8 divisors (see below), whose sum is σ = 701733120. Its totient is φ = 630105480.

The previous prime is 665878879. The next prime is 665878891. The reversal of 665878883 is 388878566.

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

It is a cyclic number.

It is not a de Polignac number, because 665878883 - 2² = 665878879 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665878823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2903 + ... + 36608.

It is an arithmetic number, because the mean of its divisors is an integer number (87716640).

Almost surely, 2^665878883 is an apocalyptic number.

665878883 is a deficient number, since it is larger than the sum of its proper divisors (35854237).

665878883 is a wasteful number, since it uses less digits than its factorization.

665878883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40417.

The product of its digits is 15482880, while the sum is 59.

The square root of 665878883 is about 25804.6291002215. The cubic root of 665878883 is about 873.2362328997.

The spelling of 665878883 in words is "six hundred sixty-five million, eight hundred seventy-eight thousand, eight hundred eighty-three".