665130575 has 12 divisors (see below), whose sum is σ = 851368128. Its totient is φ = 514939200.

The previous prime is 665130563. The next prime is 665130581. The reversal of 665130575 is 575031566.

It is not a de Polignac number, because 665130575 - 2¹⁰ = 665129551 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428342 + ... + 429891.

It is an arithmetic number, because the mean of its divisors is an integer number (70947344).

Almost surely, 2^665130575 is an apocalyptic number.

665130575 is a deficient number, since it is larger than the sum of its proper divisors (186237553).

665130575 is a wasteful number, since it uses less digits than its factorization.

665130575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858274 (or 858269 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 665130575 is about 25790.1255328469. The cubic root of 665130575 is about 872.9089989194.

Subtracting from 665130575 its reverse (575031566), we obtain a palindrome (90099009).

The spelling of 665130575 in words is "six hundred sixty-five million, one hundred thirty thousand, five hundred seventy-five".