2646689752 has 32 divisors (see below), whose sum is σ = 5749178400. Its totient is φ = 1118755584.

The previous prime is 2646689737. The next prime is 2646689753. The reversal of 2646689752 is 2579866462.

2646689752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2646689693 and 2646689702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646689753) 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, 319627 + ... + 327802.

It is an arithmetic number, because the mean of its divisors is an integer number (179661825).

Almost surely, 2^2646689752 is an apocalyptic number.

It is an amenable number.

2646689752 is an abundant number, since it is smaller than the sum of its proper divisors (3102488648).

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

2646689752 is a wasteful number, since it uses less digits than its factorization.

2646689752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647515 (or 647511 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The square root of 2646689752 is about 51445.9886871659. The cubic root of 2646689752 is about 1383.2510607608.

The spelling of 2646689752 in words is "two billion, six hundred forty-six million, six hundred eighty-nine thousand, seven hundred fifty-two".