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68387413 = 177156659
BaseRepresentation
bin1000001001110…
…00001001010101
311202200102220011
410010320021111
5120001344123
610441440221
71460166133
oct404701125
9152612804
1068387413
113566a526
121aaa0071
1311225833
149122753
15600ce0d
hex4138255

68387413 has 8 divisors (see below), whose sum is σ = 73431360. Its totient is φ = 63456960.

The previous prime is 68387401. The next prime is 68387461. The reversal of 68387413 is 31478386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68387413 - 25 = 68387381 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 (68387513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27123 + ... + 29536.

It is an arithmetic number, because the mean of its divisors is an integer number (9178920).

Almost surely, 268387413 is an apocalyptic number.

It is an amenable number.

68387413 is a deficient number, since it is larger than the sum of its proper divisors (5043947).

68387413 is a wasteful number, since it uses less digits than its factorization.

68387413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56747.

The product of its digits is 96768, while the sum is 40.

The square root of 68387413 is about 8269.6682521127. The cubic root of 68387413 is about 408.9391830950.

The spelling of 68387413 in words is "sixty-eight million, three hundred eighty-seven thousand, four hundred thirteen".

Divisors: 1 17 71 1207 56659 963203 4022789 68387413