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68683407 = 313107109151
BaseRepresentation
bin1000001100000…
…00011010001111
311210020110220220
410012000122033
5120040332112
610452042423
71462541112
oct406003217
9153213826
1068683407
1135851951
121b003413
13112ca490
14919c579
15606a98c
hex418068f

68683407 has 32 divisors (see below), whose sum is σ = 101122560. Its totient is φ = 41212800.

The previous prime is 68683379. The next prime is 68683411. The reversal of 68683407 is 70438686.

It is not a de Polignac number, because 68683407 - 26 = 68683343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68683477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 454782 + ... + 454932.

It is an arithmetic number, because the mean of its divisors is an integer number (3160080).

Almost surely, 268683407 is an apocalyptic number.

68683407 is a deficient number, since it is larger than the sum of its proper divisors (32439153).

68683407 is a wasteful number, since it uses less digits than its factorization.

68683407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 68683407 is about 8287.5452939939. The cubic root of 68683407 is about 409.5283233312.

The spelling of 68683407 in words is "sixty-eight million, six hundred eighty-three thousand, four hundred seven".

Divisors: 1 3 13 39 107 109 151 321 327 453 1391 1417 1963 4173 4251 5889 11663 16157 16459 34989 48471 49377 151619 210041 213967 454857 630123 641901 1761113 5283339 22894469 68683407