66875467 has 12 divisors (see below), whose sum is σ = 74136816. Its totient is φ = 60199040.

The previous prime is 66875461. The next prime is 66875491. The reversal of 66875467 is 76457866.

It is not a de Polignac number, because 66875467 - 2¹⁹ = 66351179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66875467.

It is not an unprimeable number, because it can be changed into a prime (66875461) 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, 1617 + ... + 11677.

It is an arithmetic number, because the mean of its divisors is an integer number (6178068).

Almost surely, 2^66875467 is an apocalyptic number.

66875467 is a deficient number, since it is larger than the sum of its proper divisors (7261349).

66875467 is a wasteful number, since it uses less digits than its factorization.

66875467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10118 (or 10101 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The square root of 66875467 is about 8177.7421700614. The cubic root of 66875467 is about 405.9030137915.

The spelling of 66875467 in words is "sixty-six million, eight hundred seventy-five thousand, four hundred sixty-seven".