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68880897 = 3247162839
BaseRepresentation
bin1000001101100…
…00101000000001
311210121111211100
410012300220001
5120113142042
610500205013
71464322641
oct406605001
9153544740
1068880897
1135977268
121b099769
1311369337
149210521
1560a924c
hex41b0a01

68880897 has 12 divisors (see below), whose sum is σ = 101612160. Its totient is φ = 44943288.

The previous prime is 68880893. The next prime is 68880899. The reversal of 68880897 is 79808886.

It is not a de Polignac number, because 68880897 - 22 = 68880893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68880893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80997 + ... + 81842.

It is an arithmetic number, because the mean of its divisors is an integer number (8467680).

Almost surely, 268880897 is an apocalyptic number.

It is an amenable number.

68880897 is a deficient number, since it is larger than the sum of its proper divisors (32731263).

68880897 is a wasteful number, since it uses less digits than its factorization.

68880897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162892 (or 162889 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 68880897 is about 8299.4516083896. The cubic root of 68880897 is about 409.9204624613.

The spelling of 68880897 in words is "sixty-eight million, eight hundred eighty thousand, eight hundred ninety-seven".

Divisors: 1 3 9 47 141 423 162839 488517 1465551 7653433 22960299 68880897