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68258771 = 79751253
BaseRepresentation
bin1000001000110…
…00101111010011
311202102220102122
410010120233103
5114433240041
610435004455
71456122110
oct404305723
9152386378
1068258771
1135591909
121aa3972b
13111ac109
1490cb907
155ed4c4b
hex4118bd3

68258771 has 4 divisors (see below), whose sum is σ = 78010032. Its totient is φ = 58507512.

The previous prime is 68258767. The next prime is 68258777. The reversal of 68258771 is 17785286.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68258771 - 22 = 68258767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68258777) 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, 4875620 + ... + 4875633.

It is an arithmetic number, because the mean of its divisors is an integer number (19502508).

Almost surely, 268258771 is an apocalyptic number.

68258771 is a deficient number, since it is larger than the sum of its proper divisors (9751261).

68258771 is an equidigital number, since it uses as much as digits as its factorization.

68258771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9751260.

The product of its digits is 188160, while the sum is 44.

The square root of 68258771 is about 8261.8866489441. The cubic root of 68258771 is about 408.6826067632.

The spelling of 68258771 in words is "sixty-eight million, two hundred fifty-eight thousand, seven hundred seventy-one".

Divisors: 1 7 9751253 68258771