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87664106 = 2154928297
BaseRepresentation
bin1010011100110…
…10010111101010
320002221210112202
411032122113222
5134420222411
612410540202
72113063325
oct516322752
9202853482
1087664106
1145536382
1225437662
131521496a
14b8dd7bc
157a6983b
hex539a5ea

87664106 has 8 divisors (see below), whose sum is σ = 131585700. Its totient is φ = 43802208.

The previous prime is 87664099. The next prime is 87664133. The reversal of 87664106 is 60146678.

It can be written as a sum of positive squares in 2 ways, for example, as 79049881 + 8614225 = 8891^2 + 2935^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 87664106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11051 + ... + 17246.

Almost surely, 287664106 is an apocalyptic number.

87664106 is a deficient number, since it is larger than the sum of its proper divisors (43921594).

87664106 is a wasteful number, since it uses less digits than its factorization.

87664106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29848.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 87664106 is about 9362.9111925725. The cubic root of 87664106 is about 444.2293711109.

The spelling of 87664106 in words is "eighty-seven million, six hundred sixty-four thousand, one hundred six".

Divisors: 1 2 1549 3098 28297 56594 43832053 87664106