66061075 has 12 divisors (see below), whose sum is σ = 82053280. Its totient is φ = 52760160.

The previous prime is 66061067. The next prime is 66061091. The reversal of 66061075 is 57016066.

It is not a de Polignac number, because 66061075 - 2³ = 66061067 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15862 + ... + 19588.

Almost surely, 2^66061075 is an apocalyptic number.

66061075 is a deficient number, since it is larger than the sum of its proper divisors (15992205).

66061075 is a wasteful number, since it uses less digits than its factorization.

66061075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446 (or 4441 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 66061075 is about 8127.7964418408. The cubic root of 66061075 is about 404.2486195571.

The spelling of 66061075 in words is "sixty-six million, sixty-one thousand, seventy-five".