660285265 has 8 divisors (see below), whose sum is σ = 826792128. Its totient is φ = 505261680.

The previous prime is 660285259. The next prime is 660285277. The reversal of 660285265 is 562582066.

It is a happy number.

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

It is not a de Polignac number, because 660285265 - 2¹⁵ = 660252497 is a prime.

It is a super-2 number, since 2×660285265² = 871953262352240450, which contains 22 as substring.

It is a Duffinian 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, 2870691 + ... + 2870920.

It is an arithmetic number, because the mean of its divisors is an integer number (103349016).

Almost surely, 2^660285265 is an apocalyptic number.

It is an amenable number.

660285265 is a deficient number, since it is larger than the sum of its proper divisors (166506863).

660285265 is a wasteful number, since it uses less digits than its factorization.

660285265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5741639.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 660285265 is about 25696.0165200756. The cubic root of 660285265 is about 870.7841896725.

The spelling of 660285265 in words is "six hundred sixty million, two hundred eighty-five thousand, two hundred sixty-five".