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68600387 = 316721661
BaseRepresentation
bin1000001011011…
…00001001000011
311210002021001002
410011230021003
5120030203022
610450202215
71462044062
oct405541103
9153067032
1068600387
11357a5539
121ab8336b
131129b75b
14917a1d9
156051092
hex416c243

68600387 has 4 divisors (see below), whose sum is σ = 68625216. Its totient is φ = 68575560.

The previous prime is 68600381. The next prime is 68600419. The reversal of 68600387 is 78300686.

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

It is a cyclic number.

It is not a de Polignac number, because 68600387 - 214 = 68584003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68600387.

It is not an unprimeable number, because it can be changed into a prime (68600381) 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, 7664 + ... + 13997.

It is an arithmetic number, because the mean of its divisors is an integer number (17156304).

Almost surely, 268600387 is an apocalyptic number.

68600387 is a deficient number, since it is larger than the sum of its proper divisors (24829).

68600387 is a wasteful number, since it uses less digits than its factorization.

68600387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24828.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 68600387 is about 8282.5350587848. The cubic root of 68600387 is about 409.3632531408.

The spelling of 68600387 in words is "sixty-eight million, six hundred thousand, three hundred eighty-seven".

Divisors: 1 3167 21661 68600387