6601654564 has 24 divisors (see below), whose sum is σ = 11650867200. Its totient is φ = 3272867136.

The previous prime is 6601654561. The next prime is 6601654583. The reversal of 6601654564 is 4654561066.

It is a self number, because there is not a number n which added to its sum of digits gives 6601654564.

It is not an unprimeable number, because it can be changed into a prime (6601654561) 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, 1215984 + ... + 1221400.

It is an arithmetic number, because the mean of its divisors is an integer number (485452800).

Almost surely, 2^6601654564 is an apocalyptic number.

It is an amenable number.

6601654564 is a deficient number, since it is larger than the sum of its proper divisors (5049212636).

6601654564 is a wasteful number, since it uses less digits than its factorization.

6601654564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947 (or 7945 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 6601654564 is about 81250.5665457171. The cubic root of 6601654564 is about 1875.9341894345.

The spelling of 6601654564 in words is "six billion, six hundred one million, six hundred fifty-four thousand, five hundred sixty-four".