66883743 has 12 divisors (see below), whose sum is σ = 101694840. Its totient is φ = 42242256.

The previous prime is 66883723. The next prime is 66883777. The reversal of 66883743 is 34738866.

It is not a de Polignac number, because 66883743 - 2⁵ = 66883711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66883723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195396 + ... + 195737.

It is an arithmetic number, because the mean of its divisors is an integer number (8474570).

Almost surely, 2^66883743 is an apocalyptic number.

66883743 is a deficient number, since it is larger than the sum of its proper divisors (34811097).

66883743 is a wasteful number, since it uses less digits than its factorization.

66883743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391158 (or 391155 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 66883743 is about 8178.2481620455. The cubic root of 66883743 is about 405.9197569258.

The spelling of 66883743 in words is "sixty-six million, eight hundred eighty-three thousand, seven hundred forty-three".