66673497 has 8 divisors (see below), whose sum is σ = 96979680. Its totient is φ = 40408160.

The previous prime is 66673483. The next prime is 66673499. The reversal of 66673497 is 79437666.

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

It is a cyclic number.

It is not a de Polignac number, because 66673497 - 2¹⁸ = 66411353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66673499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010172 + ... + 1010237.

It is an arithmetic number, because the mean of its divisors is an integer number (12122460).

Almost surely, 2^66673497 is an apocalyptic number.

It is an amenable number.

66673497 is a deficient number, since it is larger than the sum of its proper divisors (30306183).

66673497 is a wasteful number, since it uses less digits than its factorization.

66673497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020423.

The product of its digits is 1143072, while the sum is 48.

The square root of 66673497 is about 8165.3840693503. The cubic root of 66673497 is about 405.4939803877.

The spelling of 66673497 in words is "sixty-six million, six hundred seventy-three thousand, four hundred ninety-seven".