66410743 has 4 divisors (see below), whose sum is σ = 75898000. Its totient is φ = 56923488.

The previous prime is 66410741. The next prime is 66410777. The reversal of 66410743 is 34701466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34701466 = 2 ⋅17350733.

It is a cyclic number.

It is not a de Polignac number, because 66410743 - 2¹ = 66410741 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 (66410741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4743618 + ... + 4743631.

It is an arithmetic number, because the mean of its divisors is an integer number (18974500).

Almost surely, 2^66410743 is an apocalyptic number.

66410743 is a deficient number, since it is larger than the sum of its proper divisors (9487257).

66410743 is an equidigital number, since it uses as much as digits as its factorization.

66410743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9487256.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 66410743 is about 8149.2786797360. The cubic root of 66410743 is about 404.9606078640.

The spelling of 66410743 in words is "sixty-six million, four hundred ten thousand, seven hundred forty-three".