665275575 has 48 divisors (see below), whose sum is σ = 1174567680. Its totient is φ = 331457280.

The previous prime is 665275571. The next prime is 665275579. The reversal of 665275575 is 575572566.

It is an interprime number because it is at equal distance from previous prime (665275571) and next prime (665275579).

It is not a de Polignac number, because 665275575 - 2² = 665275571 is a prime.

It is a super-3 number, since 3×665275575³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665275571) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69691 + ... + 78659.

It is an arithmetic number, because the mean of its divisors is an integer number (24470160).

Almost surely, 2^665275575 is an apocalyptic number.

665275575 is a deficient number, since it is larger than the sum of its proper divisors (509292105).

665275575 is a wasteful number, since it uses less digits than its factorization.

665275575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048 (or 9043 counting only the distinct ones).

The product of its digits is 2205000, while the sum is 48.

The square root of 665275575 is about 25792.9365330898. The cubic root of 665275575 is about 872.9724263691.

The spelling of 665275575 in words is "six hundred sixty-five million, two hundred seventy-five thousand, five hundred seventy-five".