66601135 has 8 divisors (see below), whose sum is σ = 79971120. Its totient is φ = 53247744.

The previous prime is 66601133. The next prime is 66601141. The reversal of 66601135 is 53110666.

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 66601135 - 2¹ = 66601133 is a prime.

It is a super-2 number, since 2×66601135² = 8871422366576450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66601133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7839 + ... + 13951.

It is an arithmetic number, because the mean of its divisors is an integer number (9996390).

Almost surely, 2^66601135 is an apocalyptic number.

66601135 is a deficient number, since it is larger than the sum of its proper divisors (13369985).

66601135 is a wasteful number, since it uses less digits than its factorization.

66601135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8297.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 66601135 is about 8160.9518439947. The cubic root of 66601135 is about 405.3472305375.

The spelling of 66601135 in words is "sixty-six million, six hundred one thousand, one hundred thirty-five".