6559897628 has 6 divisors (see below), whose sum is σ = 11479820856. Its totient is φ = 3279948812.

The previous prime is 6559897601. The next prime is 6559897639. The reversal of 6559897628 is 8267989556.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 819987200 + ... + 819987207.

It is an arithmetic number, because the mean of its divisors is an integer number (1913303476).

Almost surely, 2^6559897628 is an apocalyptic number.

It is an amenable number.

6559897628 is a deficient number, since it is larger than the sum of its proper divisors (4919923228).

6559897628 is a wasteful number, since it uses less digits than its factorization.

6559897628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639974411 (or 1639974409 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 65.

The square root of 6559897628 is about 80993.1949487116. The cubic root of 6559897628 is about 1871.9705868555.

The spelling of 6559897628 in words is "six billion, five hundred fifty-nine million, eight hundred ninety-seven thousand, six hundred twenty-eight".