66333696 has 176 divisors, whose sum is σ = 209088768. Its totient is φ = 18432000.

The previous prime is 66333691. The next prime is 66333721. The reversal of 66333696 is 69633366.

It is a tau number, because it is divible by the number of its divisors (176).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66333691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439221 + ... + 439371.

Almost surely, 2^66333696 is an apocalyptic number.

66333696 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66333696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104544384).

66333696 is an abundant number, since it is smaller than the sum of its proper divisors (142755072).

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

66333696 is a wasteful number, since it uses less digits than its factorization.

66333696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 180 counting only the distinct ones).

The product of its digits is 314928, while the sum is 42.

The square root of 66333696 is about 8144.5500796545. The cubic root of 66333696 is about 404.8039410741.

The spelling of 66333696 in words is "sixty-six million, three hundred thirty-three thousand, six hundred ninety-six".