66260444 has 12 divisors (see below), whose sum is σ = 117104568. Its totient is φ = 32802000.

The previous prime is 66260431. The next prime is 66260471. The reversal of 66260444 is 44406266.

It is a self number, because there is not a number n which added to its sum of digits gives 66260444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81602 + ... + 82409.

It is an arithmetic number, because the mean of its divisors is an integer number (9758714).

Almost surely, 2^66260444 is an apocalyptic number.

It is an amenable number.

66260444 is a deficient number, since it is larger than the sum of its proper divisors (50844124).

66260444 is a wasteful number, since it uses less digits than its factorization.

66260444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164116 (or 164114 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 66260444 is about 8140.0518425868. The cubic root of 66260444 is about 404.6548784714.

The spelling of 66260444 in words is "sixty-six million, two hundred sixty thousand, four hundred forty-four".