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68746013 = 782311933
BaseRepresentation
bin1000001100011…
…11101100011101
311210100122210122
410012033230131
5120044333023
610453244325
71463221460
oct406175435
9153318718
1068746013
1135894996
121b0336a5
131131cb1b
1491b72d7
15607e2c8
hex418fb1d

68746013 has 8 divisors (see below), whose sum is σ = 78668928. Its totient is φ = 58848624.

The previous prime is 68746001. The next prime is 68746019. The reversal of 68746013 is 31064786.

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

It is a cyclic number.

It is not a de Polignac number, because 68746013 - 28 = 68745757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68746019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206 + ... + 11727.

It is an arithmetic number, because the mean of its divisors is an integer number (9833616).

Almost surely, 268746013 is an apocalyptic number.

It is an amenable number.

68746013 is a deficient number, since it is larger than the sum of its proper divisors (9922915).

68746013 is a wasteful number, since it uses less digits than its factorization.

68746013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12763.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 68746013 is about 8291.3215472565. The cubic root of 68746013 is about 409.6527160347.

The spelling of 68746013 in words is "sixty-eight million, seven hundred forty-six thousand, thirteen".

Divisors: 1 7 823 5761 11933 83531 9820859 68746013