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80613005 = 5111465691
BaseRepresentation
bin1001100111000…
…00111010001101
312121200120020212
410303200322031
5131114104010
611555452205
71666125224
oct463407215
9177616225
1080613005
114155a820
1222bb7065
1313916405
14a9c5cbb
157125505
hex4ce0e8d

80613005 has 8 divisors (see below), whose sum is σ = 105529824. Its totient is φ = 58627600.

The previous prime is 80612941. The next prime is 80613019. The reversal of 80613005 is 50031608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80613005 - 26 = 80612941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732791 + ... + 732900.

It is an arithmetic number, because the mean of its divisors is an integer number (13191228).

Almost surely, 280613005 is an apocalyptic number.

It is an amenable number.

80613005 is a deficient number, since it is larger than the sum of its proper divisors (24916819).

80613005 is a wasteful number, since it uses less digits than its factorization.

80613005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465707.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 80613005 is about 8978.4745363564. The cubic root of 80613005 is about 431.9847048911.

The spelling of 80613005 in words is "eighty million, six hundred thirteen thousand, five".

Divisors: 1 5 11 55 1465691 7328455 16122601 80613005