66064383 has 64 divisors (see below), whose sum is σ = 125030400. Its totient is φ = 33475680.

The previous prime is 66064381. The next prime is 66064393. The reversal of 66064383 is 38346066.

66064383 = 2³ + 3³ + ... + 127³.

66064383 is a `hidden beast` number, since 6 + 6 + 0 + 643 + 8 + 3 = 666.

It is a Cunningham number, because it is equal to 8128²-1.

It is not a de Polignac number, because 66064383 - 2¹ = 66064381 is a prime.

It is a zygodrome in base 2 and base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66064381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89028 + ... + 89766.

It is an arithmetic number, because the mean of its divisors is an integer number (1953600).

Almost surely, 2^66064383 is an apocalyptic number.

66064383 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

66064383 is a deficient number, since it is larger than the sum of its proper divisors (58966017).

66064383 is a wasteful number, since it uses less digits than its factorization.

66064383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 66064383 is about 8127.9999384843. Note that the first 4 decimals coincide. The cubic root of 66064383 is about 404.2553670106.

The spelling of 66064383 in words is "sixty-six million, sixty-four thousand, three hundred eighty-three".