6666145235 has 8 divisors (see below), whose sum is σ = 8118768336. Its totient is φ = 5253320160.

The previous prime is 6666145201. The next prime is 6666145237. The reversal of 6666145235 is 5325416666.

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

It is not a de Polignac number, because 6666145235 - 2²² = 6661950931 is a prime.

It is a super-2 number, since 2×6666145235² = 88874984588226410450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6666145237) 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, 9949136 + ... + 9949805.

It is an arithmetic number, because the mean of its divisors is an integer number (1014846042).

Almost surely, 2^6666145235 is an apocalyptic number.

6666145235 is a deficient number, since it is larger than the sum of its proper divisors (1452623101).

6666145235 is a wasteful number, since it uses less digits than its factorization.

6666145235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19899013.

The product of its digits is 777600, while the sum is 44.

The square root of 6666145235 is about 81646.4649265356. The cubic root of 6666145235 is about 1882.0229878842.

The spelling of 6666145235 in words is "six billion, six hundred sixty-six million, one hundred forty-five thousand, two hundred thirty-five".