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56606685 = 3517221987
BaseRepresentation
bin1101011111101…
…1111111011101
310221111220202220
43113323333131
5103442403220
65341135553
71255102032
oct327737735
9127456686
1056606685
1129a53493
1216b5a5b9
13b95c5a5
147737389
154e82540
hex35fbfdd

56606685 has 16 divisors (see below), whose sum is σ = 95898816. Its totient is φ = 28414208.

The previous prime is 56606663. The next prime is 56606689. The reversal of 56606685 is 58660665.

It is not a de Polignac number, because 56606685 - 25 = 56606653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56606689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110739 + ... + 111248.

It is an arithmetic number, because the mean of its divisors is an integer number (5993676).

Almost surely, 256606685 is an apocalyptic number.

It is an amenable number.

56606685 is a deficient number, since it is larger than the sum of its proper divisors (39292131).

56606685 is a wasteful number, since it uses less digits than its factorization.

56606685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222012.

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 56606685 is about 7523.7414229890. The cubic root of 56606685 is about 383.9628802552.

It can be divided in two parts, 56606 and 685, that added together give a triangular number (57291 = T338).

The spelling of 56606685 in words is "fifty-six million, six hundred six thousand, six hundred eighty-five".

Divisors: 1 3 5 15 17 51 85 255 221987 665961 1109935 3329805 3773779 11321337 18868895 56606685