66001441 has 8 divisors (see below), whose sum is σ = 72072000. Its totient is φ = 59942640.

The previous prime is 66001427. The next prime is 66001447. The reversal of 66001441 is 14410066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66001441 - 2⁵ = 66001409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66001447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12235 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (9009000).

Almost surely, 2^66001441 is an apocalyptic number.

It is an amenable number.

66001441 is a deficient number, since it is larger than the sum of its proper divisors (6070559).

66001441 is a wasteful number, since it uses less digits than its factorization.

66001441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5879.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 66001441 is about 8124.1270915711. The cubic root of 66001441 is about 404.1269431655.

The spelling of 66001441 in words is "sixty-six million, one thousand, four hundred forty-one".