66737093 has 2 divisors, whose sum is σ = 66737094. Its totient is φ = 66737092.

The previous prime is 66737071. The next prime is 66737113. The reversal of 66737093 is 39073766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43533604 + 23203489 = 6598^2 + 4817^2 .

It is a cyclic number.

It is not a de Polignac number, because 66737093 - 2⁶ = 66737029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66737093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66707093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33368546 + 33368547.

It is an arithmetic number, because the mean of its divisors is an integer number (33368547).

Almost surely, 2^66737093 is an apocalyptic number.

It is an amenable number.

66737093 is a deficient number, since it is larger than the sum of its proper divisors (1).

66737093 is an equidigital number, since it uses as much as digits as its factorization.

66737093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 41.

The square root of 66737093 is about 8169.2773854240. The cubic root of 66737093 is about 405.6228651846.

The spelling of 66737093 in words is "sixty-six million, seven hundred thirty-seven thousand, ninety-three".