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86620213 = 6771131139
BaseRepresentation
bin1010010100110…
…11100000110101
320000222202121001
411022123200311
5134133321323
612332323301
72101155031
oct512334065
9200882531
1086620213
1144993059
1225013531
1314c3a784
14b70b1c1
1579103ad
hex529b835

86620213 has 16 divisors (see below), whose sum is σ = 90478080. Its totient is φ = 82882800.

The previous prime is 86620207. The next prime is 86620241. The reversal of 86620213 is 31202668.

It is a cyclic number.

It is not a de Polignac number, because 86620213 - 25 = 86620181 is a prime.

It is a super-2 number, since 2×866202132 = 15006122600330738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86620273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623098 + ... + 623236.

It is an arithmetic number, because the mean of its divisors is an integer number (5654880).

Almost surely, 286620213 is an apocalyptic number.

It is an amenable number.

86620213 is a deficient number, since it is larger than the sum of its proper divisors (3857867).

86620213 is a wasteful number, since it uses less digits than its factorization.

86620213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 86620213 is about 9306.9980659716. The cubic root of 86620213 is about 442.4590499094.

The spelling of 86620213 in words is "eighty-six million, six hundred twenty thousand, two hundred thirteen".

Divisors: 1 67 71 131 139 4757 8777 9301 9313 9869 18209 623167 661223 1220003 1292839 86620213