66575023 has 8 divisors (see below), whose sum is σ = 67303040. Its totient is φ = 65850840.

The previous prime is 66574999. The next prime is 66575027. The reversal of 66575023 is 32057566.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66575023 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 66575023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66575027) 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, 45286 + ... + 46732.

It is an arithmetic number, because the mean of its divisors is an integer number (8412880).

Almost surely, 2^66575023 is an apocalyptic number.

66575023 is a deficient number, since it is larger than the sum of its proper divisors (728017).

66575023 is a wasteful number, since it uses less digits than its factorization.

66575023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 66575023 is about 8159.3518737704. The cubic root of 66575023 is about 405.2942494061.

The spelling of 66575023 in words is "sixty-six million, five hundred seventy-five thousand, twenty-three".