646984024560 has 160 divisors (see below), whose sum is σ = 2282854512960. Its totient is φ = 168321024000.

The previous prime is 646984024543. The next prime is 646984024567. The reversal of 646984024560 is 65420489646.

646984024560 is a `hidden beast` number, since 6 + 469 + 84 + 0 + 2 + 45 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 646984024497 and 646984024506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646984024567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3564241 + ... + 3741360.

It is an arithmetic number, because the mean of its divisors is an integer number (14267840706).

Almost surely, 2^646984024560 is an apocalyptic number.

646984024560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

646984024560 is an abundant number, since it is smaller than the sum of its proper divisors (1635870488400).

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

646984024560 is a wasteful number, since it uses less digits than its factorization.

646984024560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7305664 (or 7305652 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 646984024560 in words is "six hundred forty-six billion, nine hundred eighty-four million, twenty-four thousand, five hundred sixty".