66633441 has 8 divisors (see below), whose sum is σ = 101536704. Its totient is φ = 38076240.

The previous prime is 66633433. The next prime is 66633449. The reversal of 66633441 is 14433666.

It is an interprime number because it is at equal distance from previous prime (66633433) and next prime (66633449).

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

It is not a de Polignac number, because 66633441 - 2³ = 66633433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66633449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586490 + ... + 1586531.

It is an arithmetic number, because the mean of its divisors is an integer number (12692088).

Almost surely, 2^66633441 is an apocalyptic number.

It is an amenable number.

66633441 is a deficient number, since it is larger than the sum of its proper divisors (34903263).

66633441 is a wasteful number, since it uses less digits than its factorization.

66633441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173031.

The product of its digits is 31104, while the sum is 33.

The square root of 66633441 is about 8162.9309074621. The cubic root of 66633441 is about 405.4127601057.

The spelling of 66633441 in words is "sixty-six million, six hundred thirty-three thousand, four hundred forty-one".