6664149065 has 16 divisors (see below), whose sum is σ = 9141057792. Its totient is φ = 4568875584.

The previous prime is 6664149029. The next prime is 6664149083. The reversal of 6664149065 is 5609414666.

It is not a de Polignac number, because 6664149065 - 2⁶ = 6664149001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228332 + ... + 255858.

It is an arithmetic number, because the mean of its divisors is an integer number (571316112).

Almost surely, 2^6664149065 is an apocalyptic number.

It is an amenable number.

6664149065 is a deficient number, since it is larger than the sum of its proper divisors (2476908727).

6664149065 is a wasteful number, since it uses less digits than its factorization.

6664149065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34456.

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 6664149065 is about 81634.2395383212. The cubic root of 6664149065 is about 1881.8351125454.

The spelling of 6664149065 in words is "six billion, six hundred sixty-four million, one hundred forty-nine thousand, sixty-five".