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68386423 = 79769489
BaseRepresentation
bin1000001001101…
…11111001110111
311202200101112111
410010313321313
5120001331143
610441431451
71460163220
oct404677167
9152611474
1068386423
1135669806
121aa9b587
1311225251
149122247
15600c99d
hex4137e77

68386423 has 4 divisors (see below), whose sum is σ = 78155920. Its totient is φ = 58616928.

The previous prime is 68386421. The next prime is 68386433. The reversal of 68386423 is 32468386.

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 68386423 - 21 = 68386421 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 (68386421) 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, 4884738 + ... + 4884751.

It is an arithmetic number, because the mean of its divisors is an integer number (19538980).

Almost surely, 268386423 is an apocalyptic number.

68386423 is a deficient number, since it is larger than the sum of its proper divisors (9769497).

68386423 is an equidigital number, since it uses as much as digits as its factorization.

68386423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769496.

The product of its digits is 165888, while the sum is 40.

The square root of 68386423 is about 8269.6083945977. The cubic root of 68386423 is about 408.9372097701.

The spelling of 68386423 in words is "sixty-eight million, three hundred eighty-six thousand, four hundred twenty-three".

Divisors: 1 7 9769489 68386423