646530849360 has 720 divisors, whose sum is σ = 2531433602880. Its totient is φ = 147350016000.

The previous prime is 646530849347. The next prime is 646530849373. The reversal of 646530849360 is 63948035646.

646530849360 is a `hidden beast` number, since 6 + 4 + 6 + 530 + 8 + 49 + 3 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (646530849347) and next prime (646530849373).

It is a tau number, because it is divible by the number of its divisors (720).

It is a junction number, because it is equal to n+sod(n) for n = 646530849297 and 646530849306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 226771935 + ... + 226774785.

It is an arithmetic number, because the mean of its divisors is an integer number (3515880004).

Almost surely, 2^646530849360 is an apocalyptic number.

646530849360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646530849360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1265716801440).

646530849360 is an abundant number, since it is smaller than the sum of its proper divisors (1884902753520).

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

646530849360 is a wasteful number, since it uses less digits than its factorization.

646530849360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048 (or 3028 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 646530849360 in words is "six hundred forty-six billion, five hundred thirty million, eight hundred forty-nine thousand, three hundred sixty".