665071135 has 8 divisors (see below), whose sum is σ = 798444576. Its totient is φ = 531817440.

The previous prime is 665071111. The next prime is 665071157. The reversal of 665071135 is 531170566.

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

It is a de Polignac number, because none of the positive numbers 2^k-665071135 is a prime.

It is a super-2 number, since 2×665071135² = 884639229220376450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 665071135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17224 + ... + 40333.

It is an arithmetic number, because the mean of its divisors is an integer number (99805572).

Almost surely, 2^665071135 is an apocalyptic number.

665071135 is a deficient number, since it is larger than the sum of its proper divisors (133373441).

665071135 is a wasteful number, since it uses less digits than its factorization.

665071135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59873.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 665071135 is about 25788.9731280639. The cubic root of 665071135 is about 872.8829953754.

The spelling of 665071135 in words is "six hundred sixty-five million, seventy-one thousand, one hundred thirty-five".