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68345370 = 234584377
BaseRepresentation
bin1000001001011…
…01111000011010
311202121022020000
410010231320122
5114444022440
610440513430
71456632432
oct404557032
9152538200
1068345370
1135640985
121aa7b876
131120c662
1491112c2
156000730
hex412de1a

68345370 has 40 divisors (see below), whose sum is σ = 183775284. Its totient is φ = 18225216.

The previous prime is 68345363. The next prime is 68345377. The reversal of 68345370 is 7354386.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68345363) and next prime (68345377).

It can be written as a sum of positive squares in 2 ways, for example, as 67519089 + 826281 = 8217^2 + 909^2 .

It is not an unprimeable number, because it can be changed into a prime (68345377) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41379 + ... + 42998.

Almost surely, 268345370 is an apocalyptic number.

68345370 is an abundant number, since it is smaller than the sum of its proper divisors (115429914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68345370 is a wasteful number, since it uses less digits than its factorization.

68345370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84396 (or 84387 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 68345370 is about 8267.1258609023. The cubic root of 68345370 is about 408.8553637983.

The spelling of 68345370 in words is "sixty-eight million, three hundred forty-five thousand, three hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 810 84377 168754 253131 421885 506262 759393 843770 1265655 1518786 2278179 2531310 3796965 4556358 6834537 7593930 11390895 13669074 22781790 34172685 68345370