666496596 has 48 divisors (see below), whose sum is σ = 1581672960. Its totient is φ = 218396640.

The previous prime is 666496591. The next prime is 666496619. The reversal of 666496596 is 695694666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666496591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356055 + ... + 357921.

It is an arithmetic number, because the mean of its divisors is an integer number (32951520).

Almost surely, 2^666496596 is an apocalyptic number.

It is an amenable number.

666496596 is an abundant number, since it is smaller than the sum of its proper divisors (915176364).

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

666496596 is a wasteful number, since it uses less digits than its factorization.

666496596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364 (or 2362 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 57.

The square root of 666496596 is about 25816.5953603491. The cubic root of 666496596 is about 873.5061732125.

The spelling of 666496596 in words is "six hundred sixty-six million, four hundred ninety-six thousand, five hundred ninety-six".