6556728097 has 8 divisors (see below), whose sum is σ = 6582401280. Its totient is φ = 6531084960.

The previous prime is 6556728053. The next prime is 6556728109. The reversal of 6556728097 is 7908276556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6556728097 - 2²³ = 6548339489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556728007) 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, 493848 + ... + 506950.

It is an arithmetic number, because the mean of its divisors is an integer number (822800160).

Almost surely, 2^6556728097 is an apocalyptic number.

It is an amenable number.

6556728097 is a deficient number, since it is larger than the sum of its proper divisors (25673183).

6556728097 is a wasteful number, since it uses less digits than its factorization.

6556728097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15023.

The product of its (nonzero) digits is 6350400, while the sum is 55.

The square root of 6556728097 is about 80973.6259346215. The cubic root of 6556728097 is about 1871.6690463444.

The spelling of 6556728097 in words is "six billion, five hundred fifty-six million, seven hundred twenty-eight thousand, ninety-seven".