66001383 has 36 divisors (see below), whose sum is σ = 116751960. Its totient is φ = 35725536.

The previous prime is 66001381. The next prime is 66001391. The reversal of 66001383 is 38310066.

It is not a de Polignac number, because 66001383 - 2¹ = 66001381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66001381) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4441 + ... + 12317.

It is an arithmetic number, because the mean of its divisors is an integer number (3243110).

Almost surely, 2^66001383 is an apocalyptic number.

66001383 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

66001383 is a deficient number, since it is larger than the sum of its proper divisors (50750577).

66001383 is a wasteful number, since it uses less digits than its factorization.

66001383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7916 (or 7906 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 66001383 is about 8124.1235219561. The cubic root of 66001383 is about 404.1268247874.

The spelling of 66001383 in words is "sixty-six million, one thousand, three hundred eighty-three".