66283537 has 4 divisors (see below), whose sum is σ = 66320100. Its totient is φ = 66246976.

The previous prime is 66283499. The next prime is 66283559. The reversal of 66283537 is 73538266.

66283537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73538266 = 2 ⋅36769133.

It can be written as a sum of positive squares in 2 ways, for example, as 35414401 + 30869136 = 5951^2 + 5556^2 .

It is a cyclic number.

It is not a de Polignac number, because 66283537 - 2⁷ = 66283409 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 66283537.

It is not an unprimeable number, because it can be changed into a prime (66283577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15412 + ... + 19237.

It is an arithmetic number, because the mean of its divisors is an integer number (16580025).

Almost surely, 2^66283537 is an apocalyptic number.

It is an amenable number.

66283537 is a deficient number, since it is larger than the sum of its proper divisors (36563).

66283537 is a wasteful number, since it uses less digits than its factorization.

66283537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36562.

The product of its digits is 181440, while the sum is 40.

The square root of 66283537 is about 8141.4701989260. The cubic root of 66283537 is about 404.7018829342.

The spelling of 66283537 in words is "sixty-six million, two hundred eighty-three thousand, five hundred thirty-seven".