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80687001 = 3151178117
BaseRepresentation
bin1001100111100…
…10111110011001
312121211022202110
410303302332121
5131123441001
612001222533
71666554033
oct463627631
9177738673
1080687001
114160037a
1223031a49
1313940cb5
14aa04c53
15713c3d6
hex4cf2f99

80687001 has 8 divisors (see below), whose sum is σ = 108295744. Its totient is φ = 53434800.

The previous prime is 80686999. The next prime is 80687003. The reversal of 80687001 is 10078608.

It is an interprime number because it is at equal distance from previous prime (80686999) and next prime (80687003).

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

It is not a de Polignac number, because 80687001 - 21 = 80686999 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 80687001.

It is not an unprimeable number, because it can be changed into a prime (80687003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88606 + ... + 89511.

It is an arithmetic number, because the mean of its divisors is an integer number (13536968).

Almost surely, 280687001 is an apocalyptic number.

It is an amenable number.

80687001 is a deficient number, since it is larger than the sum of its proper divisors (27608743).

80687001 is a wasteful number, since it uses less digits than its factorization.

80687001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178271.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 80687001 is about 8982.5943357139. The cubic root of 80687001 is about 432.1168397527.

The spelling of 80687001 in words is "eighty million, six hundred eighty-seven thousand, one".

Divisors: 1 3 151 453 178117 534351 26895667 80687001