660455046 has 56 divisors (see below), whose sum is σ = 1507736664. Its totient is φ = 216833760.

The previous prime is 660455041. The next prime is 660455057. The reversal of 660455046 is 640554066.

It is a happy number.

660455046 is a `hidden beast` number, since 6 + 60 + 4 + 550 + 46 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 660455046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660455041) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 94306 + ... + 101066.

It is an arithmetic number, because the mean of its divisors is an integer number (26923869).

Almost surely, 2^660455046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660455046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753868332).

660455046 is an abundant number, since it is smaller than the sum of its proper divisors (847281618).

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

660455046 is an equidigital number, since it uses as much as digits as its factorization.

660455046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6848 (or 6833 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 660455046 is about 25699.3199520921. The cubic root of 660455046 is about 870.8588190024.

The spelling of 660455046 in words is "six hundred sixty million, four hundred fifty-five thousand, forty-six".