6514064666 has 16 divisors (see below), whose sum is σ = 10013046120. Its totient is φ = 3176440320.

The previous prime is 6514064659. The next prime is 6514064701. The reversal of 6514064666 is 6664604156.

It can be written as a sum of positive squares in 4 ways, for example, as 5630251225 + 883813441 = 75035^2 + 29729^2 .

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, 240440 + ... + 266156.

Almost surely, 2^6514064666 is an apocalyptic number.

6514064666 is a deficient number, since it is larger than the sum of its proper divisors (3498981454).

6514064666 is a wasteful number, since it uses less digits than its factorization.

6514064666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28849.

The product of its (nonzero) digits is 622080, while the sum is 44.

The square root of 6514064666 is about 80709.7557052430. The cubic root of 6514064666 is about 1867.6006733910.

The spelling of 6514064666 in words is "six billion, five hundred fourteen million, sixty-four thousand, six hundred sixty-six".