66496743 has 6 divisors (see below), whose sum is σ = 96050864. Its totient is φ = 44331156.

The previous prime is 66496721. The next prime is 66496747. The reversal of 66496743 is 34769466.

It is not a de Polignac number, because 66496743 - 2⁸ = 66496487 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 (66496747) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3694255 + ... + 3694272.

Almost surely, 2^66496743 is an apocalyptic number.

66496743 is a deficient number, since it is larger than the sum of its proper divisors (29554121).

66496743 is a wasteful number, since it uses less digits than its factorization.

66496743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7388533 (or 7388530 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 66496743 is about 8154.5535132219. The cubic root of 66496743 is about 405.1353365719.

The spelling of 66496743 in words is "sixty-six million, four hundred ninety-six thousand, seven hundred forty-three".