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13706861 = 75093847
BaseRepresentation
bin110100010010…
…011001101101
3221210101021112
4310102121231
512002104421
61205441405
7224335460
oct64223155
927711245
1013706861
117812193
124710265
132abbb8c
141b6b2d7
15130b45b
hexd1266d

13706861 has 8 divisors (see below), whose sum is σ = 15699840. Its totient is φ = 11722608.

The previous prime is 13706851. The next prime is 13706881. The reversal of 13706861 is 16860731.

13706861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13706861 - 210 = 13705837 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 (13706851) 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, 1640 + ... + 5486.

It is an arithmetic number, because the mean of its divisors is an integer number (1962480).

Almost surely, 213706861 is an apocalyptic number.

It is an amenable number.

13706861 is a deficient number, since it is larger than the sum of its proper divisors (1992979).

13706861 is an equidigital number, since it uses as much as digits as its factorization.

13706861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4363.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13706861 is about 3702.2778123744. The cubic root of 13706861 is about 239.3201884879.

The spelling of 13706861 in words is "thirteen million, seven hundred six thousand, eight hundred sixty-one".

Divisors: 1 7 509 3563 3847 26929 1958123 13706861