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68949 = 3247163
BaseRepresentation
bin10000110101010101
310111120200
4100311111
54201244
61251113
7405006
oct206525
9114520
1068949
1147891
1233a99
13254ca
141b1ad
1515669
hex10d55

68949 has 12 divisors (see below), whose sum is σ = 102336. Its totient is φ = 44712.

The previous prime is 68947. The next prime is 68963. The reversal of 68949 is 94986.

It is not a de Polignac number, because 68949 - 21 = 68947 is a prime.

Its product of digits (15552) is a multiple of the sum of its prime factors (216).

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342 + ... + 504.

It is an arithmetic number, because the mean of its divisors is an integer number (8528).

268949 is an apocalyptic number.

It is an amenable number.

68949 is a deficient number, since it is larger than the sum of its proper divisors (33387).

68949 is a wasteful number, since it uses less digits than its factorization.

With its successor (68950) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (216).

68949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 213 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 68949 is about 262.5814159456. The cubic root of 68949 is about 41.0055514989.

It can be divided in two parts, 6894 and 9, that added together give a triangular number (6903 = T117).

The spelling of 68949 in words is "sixty-eight thousand, nine hundred forty-nine".

Divisors: 1 3 9 47 141 163 423 489 1467 7661 22983 68949