6445463348 has 24 divisors (see below), whose sum is σ = 11526612552. Its totient is φ = 3152507904.

The previous prime is 6445463333. The next prime is 6445463357. The reversal of 6445463348 is 8433645446.

It can be written as a sum of positive squares in 4 ways, for example, as 2112137764 + 4333325584 = 45958^2 + 65828^2 .

It is a super-2 number, since 2×6445463348² = 83087995540822738208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26336 + ... + 116552.

It is an arithmetic number, because the mean of its divisors is an integer number (480275523).

Almost surely, 2^6445463348 is an apocalyptic number.

It is an amenable number.

6445463348 is a deficient number, since it is larger than the sum of its proper divisors (5081149204).

6445463348 is a wasteful number, since it uses less digits than its factorization.

6445463348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90611 (or 90609 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 47.

The square root of 6445463348 is about 80283.6430912300. The cubic root of 6445463348 is about 1861.0214595980.

The spelling of 6445463348 in words is "six billion, four hundred forty-five million, four hundred sixty-three thousand, three hundred forty-eight".