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13079561 = 117391609
BaseRepresentation
bin110001111001…
…010000001001
3220121111210012
4301321100021
511322021221
61144201305
7216113555
oct61712011
926544705
1013079561
117423960
124469235
13292c4b1
141a46865
15123565b
hexc79409

13079561 has 8 divisors (see below), whose sum is σ = 14296800. Its totient is φ = 11867040.

The previous prime is 13079519. The next prime is 13079569. The reversal of 13079561 is 16597031.

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 13079561 - 26 = 13079497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13079569) 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, 7325 + ... + 8933.

It is an arithmetic number, because the mean of its divisors is an integer number (1787100).

Almost surely, 213079561 is an apocalyptic number.

13079561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13079561 is a deficient number, since it is larger than the sum of its proper divisors (1217239).

13079561 is a wasteful number, since it uses less digits than its factorization.

13079561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 13079561 is about 3616.5675716071. The cubic root of 13079561 is about 235.6121718350.

The spelling of 13079561 in words is "thirteen million, seventy-nine thousand, five hundred sixty-one".

Divisors: 1 11 739 1609 8129 17699 1189051 13079561