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70113689 = 131535219
BaseRepresentation
bin1000010110111…
…01100110011001
311212221010220022
410023131212121
5120422114224
610542440225
71510646042
oct413354631
9155833808
1070113689
11366394a8
121b593075
13116ab4b9
1494518c9
15624e65e
hex42dd999

70113689 has 4 divisors (see below), whose sum is σ = 70649040. Its totient is φ = 69578340.

The previous prime is 70113671. The next prime is 70113709. The reversal of 70113689 is 98631107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98631107 = 234288309.

It is a cyclic number.

It is not a de Polignac number, because 70113689 - 212 = 70109593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70133689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267479 + ... + 267740.

It is an arithmetic number, because the mean of its divisors is an integer number (17662260).

Almost surely, 270113689 is an apocalyptic number.

It is an amenable number.

70113689 is a deficient number, since it is larger than the sum of its proper divisors (535351).

70113689 is a wasteful number, since it uses less digits than its factorization.

70113689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535350.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 70113689 is about 8373.3917261764. The cubic root of 70113689 is about 412.3515258733.

The spelling of 70113689 in words is "seventy million, one hundred thirteen thousand, six hundred eighty-nine".

Divisors: 1 131 535219 70113689