803966665 has 8 divisors (see below), whose sum is σ = 1015536960. Its totient is φ = 609322032.

The previous prime is 803966659. The next prime is 803966677. The reversal of 803966665 is 566669308.

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 803966665 - 2¹³ = 803958473 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4231309 + ... + 4231498.

It is an arithmetic number, because the mean of its divisors is an integer number (126942120).

Almost surely, 2^803966665 is an apocalyptic number.

It is an amenable number.

803966665 is a deficient number, since it is larger than the sum of its proper divisors (211570295).

803966665 is a wasteful number, since it uses less digits than its factorization.

803966665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8462831.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 803966665 is about 28354.3059340200. The cubic root of 803966665 is about 929.8495401561.

The spelling of 803966665 in words is "eight hundred three million, nine hundred sixty-six thousand, six hundred sixty-five".