66089375 has 20 divisors (see below), whose sum is σ = 90102408. Its totient is φ = 48060000.

The previous prime is 66089351. The next prime is 66089377. The reversal of 66089375 is 57398066.

It is not a de Polignac number, because 66089375 - 2⁶ = 66089311 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66089377) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2069 + ... + 11681.

Almost surely, 2^66089375 is an apocalyptic number.

66089375 is a deficient number, since it is larger than the sum of its proper divisors (24013033).

66089375 is an equidigital number, since it uses as much as digits as its factorization.

66089375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9644 (or 9629 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 66089375 is about 8129.5371946993. The cubic root of 66089375 is about 404.3063368673.

The spelling of 66089375 in words is "sixty-six million, eighty-nine thousand, three hundred seventy-five".