66880043 has 8 divisors (see below), whose sum is σ = 67472496. Its totient is φ = 66290400.

The previous prime is 66880039. The next prime is 66880069. The reversal of 66880043 is 34008866.

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 66880043 - 2² = 66880039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66879985 and 66880012.

It is not an unprimeable number, because it can be changed into a prime (66880843) 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, 97580 + ... + 98262.

It is an arithmetic number, because the mean of its divisors is an integer number (8434062).

Almost surely, 2^66880043 is an apocalyptic number.

66880043 is a deficient number, since it is larger than the sum of its proper divisors (592453).

66880043 is a wasteful number, since it uses less digits than its factorization.

66880043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 66880043 is about 8178.0219491024. The cubic root of 66880043 is about 405.9122716450.

The spelling of 66880043 in words is "sixty-six million, eight hundred eighty thousand, forty-three".