66462656 has 112 divisors (see below), whose sum is σ = 155667456. Its totient is φ = 27869184.

The previous prime is 66462647. The next prime is 66462659. The reversal of 66462656 is 65626466.

66462656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66462659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523265 + ... + 523391.

It is an arithmetic number, because the mean of its divisors is an integer number (1389888).

Almost surely, 2^66462656 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 66462656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77833728).

66462656 is an abundant number, since it is smaller than the sum of its proper divisors (89204800).

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

66462656 is a wasteful number, since it uses less digits than its factorization.

66462656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 196 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

The square root of 66462656 is about 8152.4631860561. The cubic root of 66462656 is about 405.0660990525.

The spelling of 66462656 in words is "sixty-six million, four hundred sixty-two thousand, six hundred fifty-six".