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68429697 = 3719414789
BaseRepresentation
bin1000001010000…
…10011110000001
311202202120220020
410011002132001
5120004222242
610442404053
71460433330
oct405023601
9152676806
1068429697
1135699276
121ab00629
131123bb5b
149133d17
15601a6ec
hex4142781

68429697 has 64 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 34974720.

The previous prime is 68429681. The next prime is 68429701. The reversal of 68429697 is 79692486.

It is a happy number.

It is not a de Polignac number, because 68429697 - 24 = 68429681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68429657) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 768829 + ... + 768917.

It is an arithmetic number, because the mean of its divisors is an integer number (1814400).

Almost surely, 268429697 is an apocalyptic number.

It is an amenable number.

68429697 is a deficient number, since it is larger than the sum of its proper divisors (47691903).

68429697 is a wasteful number, since it uses less digits than its factorization.

68429697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its digits is 1306368, while the sum is 51.

The square root of 68429697 is about 8272.2244287737. The cubic root of 68429697 is about 409.0234482206.

It can be divided in two parts, 684 and 29697, that added together give a triangular number (30381 = T246).

The spelling of 68429697 in words is "sixty-eight million, four hundred twenty-nine thousand, six hundred ninety-seven".

Divisors: 1 3 7 19 21 41 47 57 89 123 133 141 267 287 329 399 623 779 861 893 987 1691 1869 1927 2337 2679 3649 4183 5073 5453 5781 6251 10947 11837 12549 13489 16359 18753 25543 29281 35511 36613 40467 69331 76629 79477 87843 109839 171503 207993 238431 256291 485317 514509 556339 768873 1200521 1455951 1669017 3258557 3601563 9775671 22809899 68429697