66083357 has 4 divisors (see below), whose sum is σ = 66245340. Its totient is φ = 65921376.

The previous prime is 66083333. The next prime is 66083359. The reversal of 66083357 is 75338066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75338066 = 2 ⋅37669033.

It can be written as a sum of positive squares in 2 ways, for example, as 53202436 + 12880921 = 7294^2 + 3589^2 .

It is a cyclic number.

It is not a de Polignac number, because 66083357 - 2⁶ = 66083293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66083357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66083359) 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, 80378 + ... + 81195.

It is an arithmetic number, because the mean of its divisors is an integer number (16561335).

Almost surely, 2^66083357 is an apocalyptic number.

It is an amenable number.

66083357 is a deficient number, since it is larger than the sum of its proper divisors (161983).

66083357 is a wasteful number, since it uses less digits than its factorization.

66083357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161982.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 66083357 is about 8129.1670545020. The cubic root of 66083357 is about 404.2940646506.

The spelling of 66083357 in words is "sixty-six million, eighty-three thousand, three hundred fifty-seven".