6561484670 has 16 divisors (see below), whose sum is σ = 12719185920. Its totient is φ = 2422701984.

The previous prime is 6561484621. The next prime is 6561484687. The reversal of 6561484670 is 764841656.

It is a congruent number.

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, 25236350 + ... + 25236609.

It is an arithmetic number, because the mean of its divisors is an integer number (794949120).

Almost surely, 2^6561484670 is an apocalyptic number.

6561484670 is a deficient number, since it is larger than the sum of its proper divisors (6157701250).

6561484670 is a wasteful number, since it uses less digits than its factorization.

6561484670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50472979.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 6561484670 is about 81002.9917348736. The cubic root of 6561484670 is about 1872.1215371986.

The spelling of 6561484670 in words is "six billion, five hundred sixty-one million, four hundred eighty-four thousand, six hundred seventy".