66011678 has 8 divisors (see below), whose sum is σ = 100695960. Its totient is φ = 32446360.

The previous prime is 66011657. The next prime is 66011711. The reversal of 66011678 is 87611066.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279593 + ... + 279828.

It is an arithmetic number, because the mean of its divisors is an integer number (12586995).

Almost surely, 2^66011678 is an apocalyptic number.

66011678 is a deficient number, since it is larger than the sum of its proper divisors (34684282).

66011678 is a wasteful number, since it uses less digits than its factorization.

66011678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559482.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 66011678 is about 8124.7571040616. The cubic root of 66011678 is about 404.1478358086.

The spelling of 66011678 in words is "sixty-six million, eleven thousand, six hundred seventy-eight".