66357341 has 4 divisors (see below), whose sum is σ = 70260732. Its totient is φ = 62453952.

The previous prime is 66357337. The next prime is 66357353. The reversal of 66357341 is 14375366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14375366 = 2 ⋅7187683.

It can be written as a sum of positive squares in 2 ways, for example, as 51696100 + 14661241 = 7190^2 + 3829^2 .

It is a cyclic number.

It is not a de Polignac number, because 66357341 - 2² = 66357337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66357301) 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, 1951670 + ... + 1951703.

It is an arithmetic number, because the mean of its divisors is an integer number (17565183).

Almost surely, 2^66357341 is an apocalyptic number.

It is an amenable number.

66357341 is a deficient number, since it is larger than the sum of its proper divisors (3903391).

66357341 is a wasteful number, since it uses less digits than its factorization.

66357341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903390.

The product of its digits is 45360, while the sum is 35.

The square root of 66357341 is about 8146.0015344953. The cubic root of 66357341 is about 404.8520335354.

The spelling of 66357341 in words is "sixty-six million, three hundred fifty-seven thousand, three hundred forty-one".