666455496 has 192 divisors, whose sum is σ = 2031868800. Its totient is φ = 178354176.

The previous prime is 666455459. The next prime is 666455497. The reversal of 666455496 is 694554666.

Its product of digits (4665600) is a multiple of the sum of its prime factors (216).

It is not an unprimeable number, because it can be changed into a prime (666455497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7488220 + ... + 7488308.

It is an arithmetic number, because the mean of its divisors is an integer number (10582650).

Almost surely, 2^666455496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666455496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1015934400).

666455496 is an abundant number, since it is smaller than the sum of its proper divisors (1365413304).

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

666455496 is a wasteful number, since it uses less digits than its factorization.

666455496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 183 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 51.

The square root of 666455496 is about 25815.7993484610. The cubic root of 666455496 is about 873.4882177111.

The spelling of 666455496 in words is "six hundred sixty-six million, four hundred fifty-five thousand, four hundred ninety-six".