66060505 has 8 divisors (see below), whose sum is σ = 90597312. Its totient is φ = 45298608.

The previous prime is 66060479. The next prime is 66060509. The reversal of 66060505 is 50506066.

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

It is a cyclic number.

It is not a de Polignac number, because 66060505 - 2¹⁷ = 65929433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66060509) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 943687 + ... + 943756.

It is an arithmetic number, because the mean of its divisors is an integer number (11324664).

Almost surely, 2^66060505 is an apocalyptic number.

It is an amenable number.

66060505 is a deficient number, since it is larger than the sum of its proper divisors (24536807).

66060505 is a wasteful number, since it uses less digits than its factorization.

66060505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887455.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 66060505 is about 8127.7613769106. The cubic root of 66060505 is about 404.2474568836.

The spelling of 66060505 in words is "sixty-six million, sixty thousand, five hundred five".