6562606666 has 32 divisors (see below), whose sum is σ = 12279247488. Its totient is φ = 2555543040.

The previous prime is 6562606643. The next prime is 6562606703. The reversal of 6562606666 is 6666062656.

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, 321666 + ... + 341458.

It is an arithmetic number, because the mean of its divisors is an integer number (383726484).

Almost surely, 2^6562606666 is an apocalyptic number.

6562606666 is a deficient number, since it is larger than the sum of its proper divisors (5716640822).

6562606666 is a wasteful number, since it uses less digits than its factorization.

6562606666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21966.

The product of its (nonzero) digits is 2799360, while the sum is 49.

The square root of 6562606666 is about 81009.9170842681. The cubic root of 6562606666 is about 1872.2282403441.

The spelling of 6562606666 in words is "six billion, five hundred sixty-two million, six hundred six thousand, six hundred sixty-six".