66506135 has 8 divisors (see below), whose sum is σ = 82559520. Its totient is φ = 51370144.

The previous prime is 66506117. The next prime is 66506147. The reversal of 66506135 is 53160566.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66506135 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229187 + ... + 229476.

It is an arithmetic number, because the mean of its divisors is an integer number (10319940).

Almost surely, 2^66506135 is an apocalyptic number.

66506135 is a deficient number, since it is larger than the sum of its proper divisors (16053385).

66506135 is a wasteful number, since it uses less digits than its factorization.

66506135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458697.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 66506135 is about 8155.1293674595. The cubic root of 66506135 is about 405.1544094456.

The spelling of 66506135 in words is "sixty-six million, five hundred six thousand, one hundred thirty-five".