665346535 has 8 divisors (see below), whose sum is σ = 912475296. Its totient is φ = 456237600.

The previous prime is 665346457. The next prime is 665346557. The reversal of 665346535 is 535643566.

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

It is not a de Polignac number, because 665346535 - 2¹³ = 665338343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665346491 and 665346500.

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, 9504916 + ... + 9504985.

It is an arithmetic number, because the mean of its divisors is an integer number (114059412).

Almost surely, 2^665346535 is an apocalyptic number.

665346535 is a deficient number, since it is larger than the sum of its proper divisors (247128761).

665346535 is a wasteful number, since it uses less digits than its factorization.

665346535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19009913.

The product of its digits is 972000, while the sum is 43.

The square root of 665346535 is about 25794.3120668104. The cubic root of 665346535 is about 873.0034630920.

The spelling of 665346535 in words is "six hundred sixty-five million, three hundred forty-six thousand, five hundred thirty-five".