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75668089 = 71943101131
BaseRepresentation
bin1001000001010…
…01101001111001
312021101100002211
410200221221321
5123332334324
611301455121
71606111450
oct440515171
9167340084
1075668089
1139792612
12214114a1
13128a4723
14a099b97
15699a294
hex4829a79

75668089 has 32 divisors (see below), whose sum is σ = 94786560. Its totient is φ = 58968000.

The previous prime is 75668081. The next prime is 75668093. The reversal of 75668089 is 98086657.

It is not a de Polignac number, because 75668089 - 23 = 75668081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75668081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 577554 + ... + 577684.

It is an arithmetic number, because the mean of its divisors is an integer number (2962080).

Almost surely, 275668089 is an apocalyptic number.

It is an amenable number.

75668089 is a deficient number, since it is larger than the sum of its proper divisors (19118471).

75668089 is a wasteful number, since it uses less digits than its factorization.

75668089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 75668089 is about 8698.7406559800. The cubic root of 75668089 is about 422.9648285638.

The spelling of 75668089 in words is "seventy-five million, six hundred sixty-eight thousand, eighty-nine".

Divisors: 1 7 19 43 101 131 133 301 707 817 917 1919 2489 4343 5633 5719 13231 13433 17423 30401 39431 82517 92617 107027 251389 568933 577619 749189 1759723 3982531 10809727 75668089