66340043 has 8 divisors (see below), whose sum is σ = 82709760. Its totient is φ = 51693480.

The previous prime is 66340019. The next prime is 66340049. The reversal of 66340043 is 34004366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66340043 - 2¹⁰ = 66339019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66339994 and 66340021.

It is not an unprimeable number, because it can be changed into a prime (66340049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430703 + ... + 430856.

It is an arithmetic number, because the mean of its divisors is an integer number (10338720).

Almost surely, 2^66340043 is an apocalyptic number.

66340043 is a deficient number, since it is larger than the sum of its proper divisors (16369717).

66340043 is a wasteful number, since it uses less digits than its factorization.

66340043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861577.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 66340043 is about 8144.9397173951. The cubic root of 66340043 is about 404.8168515998.

The spelling of 66340043 in words is "sixty-six million, three hundred forty thousand, forty-three".