66260441 has 16 divisors (see below), whose sum is σ = 76994064. Its totient is φ = 56469504.

The previous prime is 66260431. The next prime is 66260471. The reversal of 66260441 is 14406266.

It can be written as a sum of positive squares in 8 ways, for example, as 1795600 + 64464841 = 1340^2 + 8029^2 .

It is a de Polignac number, because none of the positive numbers 2^k-66260441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66260431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8885 + ... + 14541.

It is an arithmetic number, because the mean of its divisors is an integer number (4812129).

Almost surely, 2^66260441 is an apocalyptic number.

It is an amenable number.

66260441 is a deficient number, since it is larger than the sum of its proper divisors (10733623).

66260441 is a wasteful number, since it uses less digits than its factorization.

66260441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 66260441 is about 8140.0516583127. The cubic root of 66260441 is about 404.6548723644.

The spelling of 66260441 in words is "sixty-six million, two hundred sixty thousand, four hundred forty-one".