665026465 has 8 divisors (see below), whose sum is σ = 811558080. Its totient is φ = 523003632.

The previous prime is 665026459. The next prime is 665026513. The reversal of 665026465 is 564620566.

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

It is a cyclic number.

It is not a de Polignac number, because 665026465 - 2⁷ = 665026337 is a prime.

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, 1126869 + ... + 1127458.

It is an arithmetic number, because the mean of its divisors is an integer number (101444760).

Almost surely, 2^665026465 is an apocalyptic number.

It is an amenable number.

665026465 is a deficient number, since it is larger than the sum of its proper divisors (146531615).

665026465 is a wasteful number, since it uses less digits than its factorization.

665026465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254391.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 665026465 is about 25788.1070456907. The cubic root of 665026465 is about 872.8634523248.

The spelling of 665026465 in words is "six hundred sixty-five million, twenty-six thousand, four hundred sixty-five".