665061464 has 16 divisors (see below), whose sum is σ = 1249537320. Its totient is φ = 331851520.

The previous prime is 665061409. The next prime is 665061469. The reversal of 665061464 is 464160566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665061469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80729 + ... + 88584.

Almost surely, 2^665061464 is an apocalyptic number.

It is an amenable number.

665061464 is a deficient number, since it is larger than the sum of its proper divisors (584475856).

665061464 is a wasteful number, since it uses less digits than its factorization.

665061464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169810 (or 169806 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 665061464 is about 25788.7856247633. The cubic root of 665061464 is about 872.8787644032.

The spelling of 665061464 in words is "six hundred sixty-five million, sixty-one thousand, four hundred sixty-four".