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80718683 = 211382553
BaseRepresentation
bin1001100111110…
…10101101011011
312121212221012212
410303322231123
5131130444213
612002025335
72000045303
oct463725533
9177787185
1080718683
1141622161
122304824b
1313952546
14aa12603
1571469a8
hex4cfab5b

80718683 has 4 divisors (see below), whose sum is σ = 81101448. Its totient is φ = 80335920.

The previous prime is 80718613. The next prime is 80718689. The reversal of 80718683 is 38681708.

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

It is a cyclic number.

It is not a de Polignac number, because 80718683 - 28 = 80718427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80718683.

It is not an unprimeable number, because it can be changed into a prime (80718689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191066 + ... + 191487.

It is an arithmetic number, because the mean of its divisors is an integer number (20275362).

Almost surely, 280718683 is an apocalyptic number.

80718683 is a deficient number, since it is larger than the sum of its proper divisors (382765).

80718683 is a wasteful number, since it uses less digits than its factorization.

80718683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382764.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 80718683 is about 8984.3576843311. The cubic root of 80718683 is about 432.1733896888.

The spelling of 80718683 in words is "eighty million, seven hundred eighteen thousand, six hundred eighty-three".

Divisors: 1 211 382553 80718683