66607500672 has 96 divisors (see below), whose sum is σ = 198279432000. Its totient is φ = 21436886016.

The previous prime is 66607500623. The next prime is 66607500679. The reversal of 66607500672 is 27600570666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66607500679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 963472 + ... + 1030287.

It is an arithmetic number, because the mean of its divisors is an integer number (2065410750).

Almost surely, 2^66607500672 is an apocalyptic number.

It is an amenable number.

66607500672 is an abundant number, since it is smaller than the sum of its proper divisors (131671931328).

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

66607500672 is a wasteful number, since it uses less digits than its factorization.

66607500672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993808 (or 1993793 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 66607500672 in words is "sixty-six billion, six hundred seven million, five hundred thousand, six hundred seventy-two".