6460221736 has 16 divisors (see below), whose sum is σ = 12147628500. Its totient is φ = 3220854144.

The previous prime is 6460221727. The next prime is 6460221737. The reversal of 6460221736 is 6371220646.

It can be written as a sum of positive squares in 2 ways, for example, as 5284417636 + 1175804100 = 72694^2 + 34290^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6460221695 and 6460221704.

It is not an unprimeable number, because it can be changed into a prime (6460221737) 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, 1154125 + ... + 1159708.

Almost surely, 2^6460221736 is an apocalyptic number.

It is an amenable number.

6460221736 is a deficient number, since it is larger than the sum of its proper divisors (5687406764).

6460221736 is a wasteful number, since it uses less digits than its factorization.

6460221736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314188 (or 2314184 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 6460221736 is about 80375.5045769543. The cubic root of 6460221736 is about 1862.4407907307.

The spelling of 6460221736 in words is "six billion, four hundred sixty million, two hundred twenty-one thousand, seven hundred thirty-six".