6448620477 has 16 divisors (see below), whose sum is σ = 9456572160. Its totient is φ = 3883947072.

The previous prime is 6448620449. The next prime is 6448620487. The reversal of 6448620477 is 7740268446.

It is not a de Polignac number, because 6448620477 - 2¹² = 6448616381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448620487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1757202 + ... + 1760867.

It is an arithmetic number, because the mean of its divisors is an integer number (591035760).

Almost surely, 2^6448620477 is an apocalyptic number.

It is an amenable number.

6448620477 is a deficient number, since it is larger than the sum of its proper divisors (3007951683).

6448620477 is a wasteful number, since it uses less digits than its factorization.

6448620477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518132.

The product of its (nonzero) digits is 1806336, while the sum is 48.

The square root of 6448620477 is about 80303.3030267124. The cubic root of 6448620477 is about 1861.3252663454.

The spelling of 6448620477 in words is "six billion, four hundred forty-eight million, six hundred twenty thousand, four hundred seventy-seven".