6456729648 has 40 divisors (see below), whose sum is σ = 17405100288. Its totient is φ = 2058667072.

The previous prime is 6456729641. The next prime is 6456729709. The reversal of 6456729648 is 8469276546.

It is not an unprimeable number, because it can be changed into a prime (6456729641) 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, 2923140 + ... + 2925347.

Almost surely, 2^6456729648 is an apocalyptic number.

It is an amenable number.

6456729648 is an abundant number, since it is smaller than the sum of its proper divisors (10948370640).

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

6456729648 is a wasteful number, since it uses less digits than its factorization.

6456729648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848521 (or 5848515 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 57.

The square root of 6456729648 is about 80353.7780567908. The cubic root of 6456729648 is about 1862.1051480011.

The spelling of 6456729648 in words is "six billion, four hundred fifty-six million, seven hundred twenty-nine thousand, six hundred forty-eight".