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68512834 = 2132635109
BaseRepresentation
bin1000001010101…
…10110001000010
311202220210221101
410011112301002
5120014402314
610444245014
71461230605
oct405266102
9152823841
1068512834
1135745785
121ab4076a
131126a950
14915633c
156035174
hex4156c42

68512834 has 8 divisors (see below), whose sum is σ = 110674620. Its totient is φ = 31621296.

The previous prime is 68512831. The next prime is 68512861. The reversal of 68512834 is 43821586.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66830625 + 1682209 = 8175^2 + 1297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 68512793 and 68512802.

It is not an unprimeable number, because it can be changed into a prime (68512831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317529 + ... + 1317580.

Almost surely, 268512834 is an apocalyptic number.

68512834 is a deficient number, since it is larger than the sum of its proper divisors (42161786).

68512834 is a wasteful number, since it uses less digits than its factorization.

68512834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635124.

The product of its digits is 46080, while the sum is 37.

The square root of 68512834 is about 8277.2479726054. The cubic root of 68512834 is about 409.1890255553.

The spelling of 68512834 in words is "sixty-eight million, five hundred twelve thousand, eight hundred thirty-four".

Divisors: 1 2 13 26 2635109 5270218 34256417 68512834