6550742740 has 12 divisors (see below), whose sum is σ = 13756559796. Its totient is φ = 2620297088.

The previous prime is 6550742729. The next prime is 6550742747. The reversal of 6550742740 is 472470556.

It can be written as a sum of positive squares in 2 ways, for example, as 946423696 + 5604319044 = 30764^2 + 74862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6550742693 and 6550742702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550742747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163768549 + ... + 163768588.

It is an arithmetic number, because the mean of its divisors is an integer number (1146379983).

Almost surely, 2^6550742740 is an apocalyptic number.

It is an amenable number.

6550742740 is an abundant number, since it is smaller than the sum of its proper divisors (7205817056).

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

6550742740 is a wasteful number, since it uses less digits than its factorization.

6550742740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327537146 (or 327537144 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The square root of 6550742740 is about 80936.6588141616. The cubic root of 6550742740 is about 1871.0993507185.

The spelling of 6550742740 in words is "six billion, five hundred fifty million, seven hundred forty-two thousand, seven hundred forty".