66683071 has 12 divisors (see below), whose sum is σ = 83537832. Its totient is φ = 52759728.

The previous prime is 66683069. The next prime is 66683101. The reversal of 66683071 is 17038666.

It is not a de Polignac number, because 66683071 - 2¹ = 66683069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66683071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66683051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51705 + ... + 52978.

It is an arithmetic number, because the mean of its divisors is an integer number (6961486).

Almost surely, 2^66683071 is an apocalyptic number.

66683071 is a deficient number, since it is larger than the sum of its proper divisors (16854761).

66683071 is a wasteful number, since it uses less digits than its factorization.

66683071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104710 (or 104703 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 66683071 is about 8165.9703036443. The cubic root of 66683071 is about 405.5133884670.

The spelling of 66683071 in words is "sixty-six million, six hundred eighty-three thousand, seventy-one".