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68796431 = 1137433931
BaseRepresentation
bin1000001100111…
…00000000001111
311210110012221222
410012130000033
5120102441211
610454313555
71463521454
oct406340017
9153405858
1068796431
1135919860
121b0588bb
1311339a62
1491cb82b
15608e1db
hex419c00f

68796431 has 16 divisors (see below), whose sum is σ = 78891648. Its totient is φ = 59421600.

The previous prime is 68796407. The next prime is 68796437. The reversal of 68796431 is 13469786.

It is a cyclic number.

It is not a de Polignac number, because 68796431 - 218 = 68534287 is a prime.

It is a super-2 number, since 2×687964312 = 9465897836675522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68796437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15536 + ... + 19466.

It is an arithmetic number, because the mean of its divisors is an integer number (4930728).

Almost surely, 268796431 is an apocalyptic number.

68796431 is a deficient number, since it is larger than the sum of its proper divisors (10095217).

68796431 is a wasteful number, since it uses less digits than its factorization.

68796431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022.

The product of its digits is 217728, while the sum is 44.

The square root of 68796431 is about 8294.3613979619. The cubic root of 68796431 is about 409.7528373491.

The spelling of 68796431 in words is "sixty-eight million, seven hundred ninety-six thousand, four hundred thirty-one".

Divisors: 1 11 37 43 407 473 1591 3931 17501 43241 145447 169033 1599917 1859363 6254221 68796431