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68689941 = 367563607
BaseRepresentation
bin1000001100000…
…10000000010101
311210020210212220
410012002000111
5120041034231
610452132553
71462566135
oct406020025
9153223786
1068689941
1135856851
121b007159
1311300448
1491a0ac5
15606c896
hex4182015

68689941 has 16 divisors (see below), whose sum is σ = 93272064. Its totient is φ = 44955504.

The previous prime is 68689919. The next prime is 68689949. The reversal of 68689941 is 14998686.

It is a happy number.

It is not a de Polignac number, because 68689941 - 25 = 68689909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68689949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112860 + ... + 113466.

It is an arithmetic number, because the mean of its divisors is an integer number (5829504).

Almost surely, 268689941 is an apocalyptic number.

It is an amenable number.

68689941 is a deficient number, since it is larger than the sum of its proper divisors (24582123).

68689941 is a wasteful number, since it uses less digits than its factorization.

68689941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240.

The product of its digits is 746496, while the sum is 51.

The square root of 68689941 is about 8287.9394906092. The cubic root of 68689941 is about 409.5413093557.

The spelling of 68689941 in words is "sixty-eight million, six hundred eighty-nine thousand, nine hundred forty-one".

Divisors: 1 3 67 201 563 607 1689 1821 37721 40669 113163 122007 341741 1025223 22896647 68689941