6449962648 has 16 divisors (see below), whose sum is σ = 12099676680. Its totient is φ = 3223382208.

The previous prime is 6449962643. The next prime is 6449962763. The reversal of 6449962648 is 8462699446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6449962592 and 6449962601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6449962643) 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, 182661 + ... + 215092.

Almost surely, 2^6449962648 is an apocalyptic number.

It is an amenable number.

6449962648 is a deficient number, since it is larger than the sum of its proper divisors (5649714032).

6449962648 is a wasteful number, since it uses less digits than its factorization.

6449962648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399786 (or 399782 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 58.

The square root of 6449962648 is about 80311.6594773138. The cubic root of 6449962648 is about 1861.4543918177.

The spelling of 6449962648 in words is "six billion, four hundred forty-nine million, nine hundred sixty-two thousand, six hundred forty-eight".