66061245 has 16 divisors (see below), whose sum is σ = 106065792. Its totient is φ = 35110080.

The previous prime is 66061223. The next prime is 66061253. The reversal of 66061245 is 54216066.

It is not a de Polignac number, because 66061245 - 2⁷ = 66061117 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3121 + ... + 11910.

It is an arithmetic number, because the mean of its divisors is an integer number (6629112).

Almost surely, 2^66061245 is an apocalyptic number.

It is an amenable number.

66061245 is a deficient number, since it is larger than the sum of its proper divisors (40004547).

66061245 is a wasteful number, since it uses less digits than its factorization.

66061245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15332.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 66061245 is about 8127.8068997731. The cubic root of 66061245 is about 404.2489663180.

The spelling of 66061245 in words is "sixty-six million, sixty-one thousand, two hundred forty-five".