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68751319 = 713755509
BaseRepresentation
bin1000001100100…
…00111111010111
311210100221002011
410012100333113
5120100020234
610453325051
71463243110
oct406207727
9153327064
1068751319
113589897a
121b036787
1311322370
1491b9207
156080b64
hex4190fd7

68751319 has 8 divisors (see below), whose sum is σ = 84617120. Its totient is φ = 54396576.

The previous prime is 68751317. The next prime is 68751341. The reversal of 68751319 is 91315786.

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

It is not a de Polignac number, because 68751319 - 21 = 68751317 is a prime.

It is a super-2 number, since 2×687513192 = 9453487728479522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68751317) 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, 377664 + ... + 377845.

It is an arithmetic number, because the mean of its divisors is an integer number (10577140).

Almost surely, 268751319 is an apocalyptic number.

68751319 is a deficient number, since it is larger than the sum of its proper divisors (15865801).

68751319 is a wasteful number, since it uses less digits than its factorization.

68751319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755529.

The product of its digits is 45360, while the sum is 40.

The square root of 68751319 is about 8291.6415141997. The cubic root of 68751319 is about 409.6632551254.

The spelling of 68751319 in words is "sixty-eight million, seven hundred fifty-one thousand, three hundred nineteen".

Divisors: 1 7 13 91 755509 5288563 9821617 68751319