66020832 has 60 divisors (see below), whose sum is σ = 194173056. Its totient is φ = 22006080.

The previous prime is 66020831. The next prime is 66020873. The reversal of 66020832 is 23802066.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 66020796 and 66020805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66020831) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10144 + ... + 15327.

Almost surely, 2^66020832 is an apocalyptic number.

It is an amenable number.

66020832 is an abundant number, since it is smaller than the sum of its proper divisors (128152224).

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

66020832 is a wasteful number, since it uses less digits than its factorization.

66020832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25493 (or 25476 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 66020832 is about 8125.3204244510. The cubic root of 66020832 is about 404.1665163330.

Adding to 66020832 its reverse (23802066), we get a palindrome (89822898).

The spelling of 66020832 in words is "sixty-six million, twenty thousand, eight hundred thirty-two".