665023355 has 8 divisors (see below), whose sum is σ = 798530064. Its totient is φ = 531684000.

The previous prime is 665023349. The next prime is 665023361. The reversal of 665023355 is 553320566.

It is an interprime number because it is at equal distance from previous prime (665023349) and next prime (665023361).

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

It is not a de Polignac number, because 665023355 - 2⁶ = 665023291 is a prime.

It is a Duffinian number.

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, 32921 + ... + 49130.

It is an arithmetic number, because the mean of its divisors is an integer number (99816258).

Almost surely, 2^665023355 is an apocalyptic number.

665023355 is a deficient number, since it is larger than the sum of its proper divisors (133506709).

665023355 is a wasteful number, since it uses less digits than its factorization.

665023355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83677.

The product of its (nonzero) digits is 81000, while the sum is 35.

The square root of 665023355 is about 25788.0467465064. The cubic root of 665023355 is about 872.8620916724.

The spelling of 665023355 in words is "six hundred sixty-five million, twenty-three thousand, three hundred fifty-five".