66277743 has 24 divisors (see below), whose sum is σ = 107273088. Its totient is φ = 36224496.

The previous prime is 66277711. The next prime is 66277753. The reversal of 66277743 is 34777266.

It is not a de Polignac number, because 66277743 - 2⁵ = 66277711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66277695 and 66277704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66277753) 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 23 ways as a sum of consecutive naturals, for example, 6421 + ... + 13182.

It is an arithmetic number, because the mean of its divisors is an integer number (4469712).

Almost surely, 2^66277743 is an apocalyptic number.

66277743 is a deficient number, since it is larger than the sum of its proper divisors (40995345).

66277743 is a wasteful number, since it uses less digits than its factorization.

66277743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19643 (or 19636 counting only the distinct ones).

The product of its digits is 296352, while the sum is 42.

The square root of 66277743 is about 8141.1143586121. The cubic root of 66277743 is about 404.6900906092.

The spelling of 66277743 in words is "sixty-six million, two hundred seventy-seven thousand, seven hundred forty-three".