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680817480 = 2335723131269
BaseRepresentation
bin101000100101000…
…111001101001000
31202110002010000020
4220211013031020
52343242124410
6151320140440
722604565420
oct5045071510
91673063006
10680817480
1131a338282
12170007720
13ab0840a5
14665c3480
153eb83a70
hex28947348

680817480 has 256 divisors, whose sum is σ = 2463436800. Its totient is φ = 147164160.

The previous prime is 680817463. The next prime is 680817493. The reversal of 680817480 is 84718086.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 2530786 + ... + 2531054.

It is an arithmetic number, because the mean of its divisors is an integer number (9622800).

Almost surely, 2680817480 is an apocalyptic number.

680817480 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 680817480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231718400).

680817480 is an abundant number, since it is smaller than the sum of its proper divisors (1782619320).

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

680817480 is a wasteful number, since it uses less digits than its factorization.

680817480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 680817480 is about 26092.4793762494. The cubic root of 680817480 is about 879.7181776616.

The spelling of 680817480 in words is "six hundred eighty million, eight hundred seventeen thousand, four hundred eighty".