6550774560 has 864 divisors, whose sum is σ = 27372002112. Its totient is φ = 1466449920.

The previous prime is 6550774547. The next prime is 6550774621. The reversal of 6550774560 is 654770556.

It is a tau number, because it is divible by the number of its divisors (864).

It is a super-3 number, since 3×6550774560³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 123599494 + ... + 123599546.

It is an arithmetic number, because the mean of its divisors is an integer number (31680558).

Almost surely, 2^6550774560 is an apocalyptic number.

6550774560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6550774560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13686001056).

6550774560 is an abundant number, since it is smaller than the sum of its proper divisors (20821227552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6550774560 is a wasteful number, since it uses less digits than its factorization.

6550774560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The square root of 6550774560 is about 80936.8553873944. The cubic root of 6550774560 is about 1871.1023803131.

The spelling of 6550774560 in words is "six billion, five hundred fifty million, seven hundred seventy-four thousand, five hundred sixty".