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68695189 = 127540907
BaseRepresentation
bin1000001100000…
…11010010010101
311210021002002021
410012003102111
5120041221224
610452213141
71462620343
oct406032225
9153232067
1068695189
113585a792
121b00a1b1
1311302954
1491a2993
15606e1e4
hex4183495

68695189 has 4 divisors (see below), whose sum is σ = 69236224. Its totient is φ = 68154156.

The previous prime is 68695103. The next prime is 68695201. The reversal of 68695189 is 98159686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68695189 - 27 = 68695061 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 (68696189) 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, 270327 + ... + 270580.

It is an arithmetic number, because the mean of its divisors is an integer number (17309056).

Almost surely, 268695189 is an apocalyptic number.

It is an amenable number.

68695189 is a deficient number, since it is larger than the sum of its proper divisors (541035).

68695189 is a wasteful number, since it uses less digits than its factorization.

68695189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541034.

The product of its digits is 933120, while the sum is 52.

The square root of 68695189 is about 8288.2560891903. The cubic root of 68695189 is about 409.5517389180.

The spelling of 68695189 in words is "sixty-eight million, six hundred ninety-five thousand, one hundred eighty-nine".

Divisors: 1 127 540907 68695189