6448687 has 4 divisors (see below), whose sum is σ = 7369936. Its totient is φ = 5527440.

The previous prime is 6448681. The next prime is 6448699. The reversal of 6448687 is 7868446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6448687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448681) 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, 460614 + ... + 460627.

It is an arithmetic number, because the mean of its divisors is an integer number (1842484).

Almost surely, 2^6448687 is an apocalyptic number.

6448687 is a deficient number, since it is larger than the sum of its proper divisors (921249).

6448687 is an equidigital number, since it uses as much as digits as its factorization.

6448687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921248.

The product of its digits is 258048, while the sum is 43.

The square root of 6448687 is about 2539.4265100609. The cubic root of 6448687 is about 186.1331666707.

It can be divided in two parts, 6448 and 687, that multiplied together give a triangular number (4429776 = T₂₉₇₆).

The spelling of 6448687 in words is "six million, four hundred forty-eight thousand, six hundred eighty-seven".