66844594 has 8 divisors (see below), whose sum is σ = 103724460. Its totient is φ = 32269776.

The previous prime is 66844579. The next prime is 66844597. The reversal of 66844594 is 49544866.

It can be written as a sum of positive squares in 2 ways, for example, as 62489025 + 4355569 = 7905^2 + 2087^2 .

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

It is a super-3 number, since 3×66844594³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66844597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576189 + ... + 576304.

Almost surely, 2^66844594 is an apocalyptic number.

66844594 is a deficient number, since it is larger than the sum of its proper divisors (36879866).

66844594 is a wasteful number, since it uses less digits than its factorization.

66844594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152524.

The product of its digits is 829440, while the sum is 46.

The square root of 66844594 is about 8175.8543284479. The cubic root of 66844594 is about 405.8405425885.

It can be divided in two parts, 668 and 44594, that multiplied together give a palindrome (29788792).

The spelling of 66844594 in words is "sixty-six million, eight hundred forty-four thousand, five hundred ninety-four".