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68704713792 = 263211213219307
BaseRepresentation
bin111111111111000111…
…101011110001000000
320120100011001002020100
4333333013223301000
52111201401320132
651321300242400
74651365301011
oct777707536100
9216304032210
1068704713792
1127157024400
12113950a0400
13662bca0100
14347a9a1008
151bc1a5237c
hexfff1ebc40

68704713792 has 756 divisors, whose sum is σ = 247531524240. Its totient is φ = 18147317760.

The previous prime is 68704713761. The next prime is 68704713797. The reversal of 68704713792 is 29731740786.

68704713792 is a `hidden beast` number, since 6 + 87 + 0 + 471 + 3 + 7 + 92 = 666.

It is not an unprimeable number, because it can be changed into a prime (68704713797) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 223793703 + ... + 223794009.

Almost surely, 268704713792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68704713792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123765762120).

68704713792 is an abundant number, since it is smaller than the sum of its proper divisors (178826810448).

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

68704713792 is a wasteful number, since it uses less digits than its factorization.

68704713792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 68704713792 in words is "sixty-eight billion, seven hundred four million, seven hundred thirteen thousand, seven hundred ninety-two".