66082513 has 16 divisors (see below), whose sum is σ = 80219520. Its totient is φ = 53174016.

The previous prime is 66082493. The next prime is 66082531. The reversal of 66082513 is 31528066.

It is not a de Polignac number, because 66082513 - 2⁹ = 66082001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66082813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12831 + ... + 17227.

It is an arithmetic number, because the mean of its divisors is an integer number (5013720).

Almost surely, 2^66082513 is an apocalyptic number.

It is an amenable number.

66082513 is a deficient number, since it is larger than the sum of its proper divisors (14137007).

66082513 is a wasteful number, since it uses less digits than its factorization.

66082513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 66082513 is about 8129.1151424986. The cubic root of 66082513 is about 404.2923434626.

The spelling of 66082513 in words is "sixty-six million, eighty-two thousand, five hundred thirteen".