6410781760 has 56 divisors (see below), whose sum is σ = 15792099480. Its totient is φ = 2475884544.

The previous prime is 6410781739. The next prime is 6410781761. The reversal of 6410781760 is 671870146.

It can be written as a sum of positive squares in 4 ways, for example, as 2707329024 + 3703452736 = 52032^2 + 60856^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (6410781761) 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, 336129 + ... + 354688.

Almost surely, 2^6410781760 is an apocalyptic number.

It is an amenable number.

6410781760 is an abundant number, since it is smaller than the sum of its proper divisors (9381317720).

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

6410781760 is a wasteful number, since it uses less digits than its factorization.

6410781760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690863 (or 690853 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 6410781760 is about 80067.3576434242. The cubic root of 6410781760 is about 1857.6775422078.

The spelling of 6410781760 in words is "six billion, four hundred ten million, seven hundred eighty-one thousand, seven hundred sixty".