66025703 has 16 divisors (see below), whose sum is σ = 71850240. Its totient is φ = 60465600.

The previous prime is 66025699. The next prime is 66025717. The reversal of 66025703 is 30752066.

It is not a de Polignac number, because 66025703 - 2² = 66025699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66025733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101726 + ... + 102372.

It is an arithmetic number, because the mean of its divisors is an integer number (4490640).

Almost surely, 2^66025703 is an apocalyptic number.

66025703 is a deficient number, since it is larger than the sum of its proper divisors (5824537).

66025703 is a wasteful number, since it uses less digits than its factorization.

66025703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 66025703 is about 8125.6201609477. The cubic root of 66025703 is about 404.1764558558.

Adding to 66025703 its reverse (30752066), we get a palindrome (96777769).

The spelling of 66025703 in words is "sixty-six million, twenty-five thousand, seven hundred three".