665706096 has 60 divisors (see below), whose sum is σ = 2032425720. Its totient is φ = 201728640.

The previous prime is 665706079. The next prime is 665706101. The reversal of 665706096 is 690607566.

It is a super-2 number, since 2×665706096² = 886329212503122432, which contains 22 as substring.

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, 208551 + ... + 211718.

It is an arithmetic number, because the mean of its divisors is an integer number (33873762).

Almost surely, 2^665706096 is an apocalyptic number.

665706096 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

665706096 is an abundant number, since it is smaller than the sum of its proper divisors (1366719624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665706096 is a wasteful number, since it uses less digits than its factorization.

665706096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420294 (or 420285 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 665706096 is about 25801.2808984360. The cubic root of 665706096 is about 873.1606951778.

The spelling of 665706096 in words is "six hundred sixty-five million, seven hundred six thousand, ninety-six".