66592745 has 4 divisors (see below), whose sum is σ = 79911300. Its totient is φ = 53274192.

The previous prime is 66592727. The next prime is 66592759. The reversal of 66592745 is 54729566.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26915344 + 39677401 = 5188^2 + 6299^2 .

It is a cyclic number.

It is not a de Polignac number, because 66592745 - 2¹⁸ = 66330601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66592696 and 66592705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6659270 + ... + 6659279.

It is an arithmetic number, because the mean of its divisors is an integer number (19977825).

Almost surely, 2^66592745 is an apocalyptic number.

It is an amenable number.

66592745 is a deficient number, since it is larger than the sum of its proper divisors (13318555).

66592745 is a wasteful number, since it uses less digits than its factorization.

66592745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13318554.

The product of its digits is 453600, while the sum is 44.

The square root of 66592745 is about 8160.4377946284. The cubic root of 66592745 is about 405.3302087751.

The spelling of 66592745 in words is "sixty-six million, five hundred ninety-two thousand, seven hundred forty-five".