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80930617 = 330124517
BaseRepresentation
bin1001101001011…
…10011100111001
312122021200221021
410310232130321
5131204234432
612010342441
72001620215
oct464563471
9178250837
1080930617
1141757409
122312aa21
13139c7b51
14aa69945
157189697
hex4d2e739

80930617 has 4 divisors (see below), whose sum is σ = 80958436. Its totient is φ = 80902800.

The previous prime is 80930599. The next prime is 80930639. The reversal of 80930617 is 71603908.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17106496 + 63824121 = 4136^2 + 7989^2 .

It is a cyclic number.

It is not a de Polignac number, because 80930617 - 219 = 80406329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80930117) 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, 8958 + ... + 15559.

It is an arithmetic number, because the mean of its divisors is an integer number (20239609).

Almost surely, 280930617 is an apocalyptic number.

It is an amenable number.

80930617 is a deficient number, since it is larger than the sum of its proper divisors (27819).

80930617 is a wasteful number, since it uses less digits than its factorization.

80930617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27818.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 80930617 is about 8996.1445630892. The cubic root of 80930617 is about 432.5512955521.

The spelling of 80930617 in words is "eighty million, nine hundred thirty thousand, six hundred seventeen".

Divisors: 1 3301 24517 80930617