66930528 has 96 divisors (see below), whose sum is σ = 202535424. Its totient is φ = 18957312.

The previous prime is 66930511. The next prime is 66930557. The reversal of 66930528 is 82503966.

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

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 91701 + ... + 92427.

It is an arithmetic number, because the mean of its divisors is an integer number (2109744).

Almost surely, 2^66930528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66930528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101267712).

66930528 is an abundant number, since it is smaller than the sum of its proper divisors (135604896).

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

66930528 is a wasteful number, since it uses less digits than its factorization.

66930528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 66930528 is about 8181.1079934200. The cubic root of 66930528 is about 406.0143814621.

The spelling of 66930528 in words is "sixty-six million, nine hundred thirty thousand, five hundred twenty-eight".