665730000066 has 32 divisors (see below), whose sum is σ = 1354716887040. Its totient is φ = 218056454784.

The previous prime is 665730000059. The next prime is 665730000073. The reversal of 665730000066 is 660000037566.

It is an interprime number because it is at equal distance from previous prime (665730000059) and next prime (665730000073).

It is a junction number, because it is equal to n+sod(n) for n = 665729999979 and 665730000033.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2707330 + ... + 2942973.

It is an arithmetic number, because the mean of its divisors is an integer number (42334902720).

Almost surely, 2^665730000066 is an apocalyptic number.

665730000066 is an abundant number, since it is smaller than the sum of its proper divisors (688986886974).

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

665730000066 is a wasteful number, since it uses less digits than its factorization.

665730000066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650650.

The product of its (nonzero) digits is 136080, while the sum is 39.

The spelling of 665730000066 in words is "six hundred sixty-five billion, seven hundred thirty million, sixty-six", and thus it is an aban number.