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87980675 = 523519227
BaseRepresentation
bin1010011111001…
…11101010000011
320010112212210112
411033213222003
5140010340200
612421421535
72115552266
oct517475203
9203485715
1087980675
1145732202
122556a8ab
13152c5a93
14b982cdd
157acd535
hex53e7a83

87980675 has 6 divisors (see below), whose sum is σ = 109096068. Its totient is φ = 70384520.

The previous prime is 87980671. The next prime is 87980687. The reversal of 87980675 is 57608978.

It is a happy number.

It is not a de Polignac number, because 87980675 - 22 = 87980671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87980671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1759589 + ... + 1759638.

It is an arithmetic number, because the mean of its divisors is an integer number (18182678).

Almost surely, 287980675 is an apocalyptic number.

87980675 is a deficient number, since it is larger than the sum of its proper divisors (21115393).

87980675 is a wasteful number, since it uses less digits than its factorization.

87980675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519237 (or 3519232 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 87980675 is about 9379.8014371307. The cubic root of 87980675 is about 444.7634563247.

The spelling of 87980675 in words is "eighty-seven million, nine hundred eighty thousand, six hundred seventy-five".

Divisors: 1 5 25 3519227 17596135 87980675