66883671 has 8 divisors (see below), whose sum is σ = 99086960. Its totient is φ = 44589096.

The previous prime is 66883637. The next prime is 66883681. The reversal of 66883671 is 17638866.

It is not a de Polignac number, because 66883671 - 2⁷ = 66883543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66883601) 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, 1238560 + ... + 1238613.

It is an arithmetic number, because the mean of its divisors is an integer number (12385870).

Almost surely, 2^66883671 is an apocalyptic number.

66883671 is a deficient number, since it is larger than the sum of its proper divisors (32203289).

66883671 is a wasteful number, since it uses less digits than its factorization.

66883671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477182 (or 2477176 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 66883671 is about 8178.2437601236. The cubic root of 66883671 is about 405.9196112689.

The spelling of 66883671 in words is "sixty-six million, eight hundred eighty-three thousand, six hundred seventy-one".