66615000606 has 96 divisors (see below), whose sum is σ = 180294356736. Its totient is φ = 17269200000.

The previous prime is 66615000581. The next prime is 66615000689. The reversal of 66615000606 is 60600051666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 675981 + ... + 768231.

It is an arithmetic number, because the mean of its divisors is an integer number (1878066216).

Almost surely, 2^66615000606 is an apocalyptic number.

66615000606 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 66615000606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90147178368).

66615000606 is an abundant number, since it is smaller than the sum of its proper divisors (113679356130).

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

66615000606 is a wasteful number, since it uses less digits than its factorization.

66615000606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92798 (or 92795 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 66615000606 in words is "sixty-six billion, six hundred fifteen million, six hundred six", and thus it is an aban number.