6460550646 has 128 divisors (see below), whose sum is σ = 14884756992. Its totient is φ = 1852032000.

The previous prime is 6460550633. The next prime is 6460550651.

It is a happy number.

6460550646 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6460550598 and 6460550607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15345516 + ... + 15345936.

It is an arithmetic number, because the mean of its divisors is an integer number (116287164).

Almost surely, 2^6460550646 is an apocalyptic number.

6460550646 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6460550646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7442378496).

6460550646 is an abundant number, since it is smaller than the sum of its proper divisors (8424206346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6460550646 is a wasteful number, since it uses less digits than its factorization.

6460550646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 6460550646 is about 80377.5506344900. The cubic root of 6460550646 is about 1862.4723977472.

The spelling of 6460550646 in words is "six billion, four hundred sixty million, five hundred fifty thousand, six hundred forty-six".