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8681342087 = 114431781519
BaseRepresentation
bin10000001010111001…
…01100010010000111
3211102000110212112102
420011130230102013
5120234410421322
63553235142315
7425063122145
oct100534542207
924360425472
108681342087
113755433890
12182344499b
13a8474bc12
145c4d86595
1535c234792
hex20572c487

8681342087 has 8 divisors (see below), whose sum is σ = 9491938560. Its totient is φ = 7874309560.

The previous prime is 8681342057. The next prime is 8681342099. The reversal of 8681342087 is 7802431868.

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

It is a cyclic number.

It is not a de Polignac number, because 8681342087 - 28 = 8681341831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8681342017) 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, 885887 + ... + 895632.

It is an arithmetic number, because the mean of its divisors is an integer number (1186492320).

Almost surely, 28681342087 is an apocalyptic number.

8681342087 is a deficient number, since it is larger than the sum of its proper divisors (810596473).

8681342087 is a wasteful number, since it uses less digits than its factorization.

8681342087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781973.

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 8681342087 is about 93173.7199375446. The cubic root of 8681342087 is about 2055.2387988411.

The spelling of 8681342087 in words is "eight billion, six hundred eighty-one million, three hundred forty-two thousand, eighty-seven".

Divisors: 1 11 443 4873 1781519 19596709 789212917 8681342087