66064896 has 160 divisors (see below), whose sum is σ = 201326400. Its totient is φ = 21648384.

The previous prime is 66064841. The next prime is 66064909. The reversal of 66064896 is 69846066.

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, 1119715 + ... + 1119773.

It is an arithmetic number, because the mean of its divisors is an integer number (1258290).

Almost surely, 2^66064896 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 66064896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100663200).

66064896 is an abundant number, since it is smaller than the sum of its proper divisors (135261504).

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

66064896 is an frugal number, since it uses more digits than its factorization.

66064896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 66064896 is about 8128.0314960020. The cubic root of 66064896 is about 404.2564133761.

It can be divided in two parts, 660 and 64896, that added together give a palindrome (65556).

The spelling of 66064896 in words is "sixty-six million, sixty-four thousand, eight hundred ninety-six".