665061335 has 8 divisors (see below), whose sum is σ = 845019216. Its totient is φ = 500752000.

The previous prime is 665061289. The next prime is 665061359. The reversal of 665061335 is 533160566.

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

It is not a de Polignac number, because 665061335 - 2⁸ = 665061079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665061295 and 665061304.

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, 3912041 + ... + 3912210.

It is an arithmetic number, because the mean of its divisors is an integer number (105627402).

Almost surely, 2^665061335 is an apocalyptic number.

665061335 is a deficient number, since it is larger than the sum of its proper divisors (179957881).

665061335 is a wasteful number, since it uses less digits than its factorization.

665061335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7824273.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 665061335 is about 25788.7831236761. The cubic root of 665061335 is about 872.8787079666.

The spelling of 665061335 in words is "six hundred sixty-five million, sixty-one thousand, three hundred thirty-five".