66880675 has 6 divisors (see below), whose sum is σ = 82932068. Its totient is φ = 53504520.

The previous prime is 66880631. The next prime is 66880691. The reversal of 66880675 is 57608866.

It is a happy number.

It is not a de Polignac number, because 66880675 - 2¹¹ = 66878627 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1337589 + ... + 1337638.

Almost surely, 2^66880675 is an apocalyptic number.

66880675 is a deficient number, since it is larger than the sum of its proper divisors (16051393).

66880675 is a wasteful number, since it uses less digits than its factorization.

66880675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675237 (or 2675232 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 66880675 is about 8178.0605891617. The cubic root of 66880675 is about 405.9135502314.

The spelling of 66880675 in words is "sixty-six million, eight hundred eighty thousand, six hundred seventy-five".