6561488 has 10 divisors (see below), whose sum is σ = 12712914. Its totient is φ = 3280736.

The previous prime is 6561481. The next prime is 6561493. The reversal of 6561488 is 8841656.

It can be written as a sum of positive squares in only one way, i.e., 5053504 + 1507984 = 2248^2 + 1228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6561481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205031 + ... + 205062.

Almost surely, 2^6561488 is an apocalyptic number.

It is an amenable number.

6561488 is a deficient number, since it is larger than the sum of its proper divisors (6151426).

6561488 is a wasteful number, since it uses less digits than its factorization.

6561488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410101 (or 410095 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 6561488 is about 2561.5401616996. The cubic root of 6561488 is about 187.2121853904.

The spelling of 6561488 in words is "six million, five hundred sixty-one thousand, four hundred eighty-eight".