666245016 has 48 divisors (see below), whose sum is σ = 1805600160. Its totient is φ = 221935680.

The previous prime is 666244987. The next prime is 666245057. The reversal of 666245016 is 610542666.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 216126 + ... + 219186.

It is an arithmetic number, because the mean of its divisors is an integer number (37616670).

Almost surely, 2^666245016 is an apocalyptic number.

It is an amenable number.

666245016 is an abundant number, since it is smaller than the sum of its proper divisors (1139355144).

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

666245016 is a wasteful number, since it uses less digits than its factorization.

666245016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096 (or 6089 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 666245016 is about 25811.7224531801. The cubic root of 666245016 is about 873.3962530017.

The spelling of 666245016 in words is "six hundred sixty-six million, two hundred forty-five thousand, sixteen".