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681487095 = 35291566637
BaseRepresentation
bin101000100111101…
…010101011110111
31202111100010112210
4220213222223313
52343430041340
6151342344503
722613354562
oct5047525367
91674303483
10681487095
1131a755383
1217028b133
13ab259b03
14667194d9
153ec67180
hex289eaaf7

681487095 has 16 divisors (see below), whose sum is σ = 1127979360. Its totient is φ = 350926464.

The previous prime is 681487073. The next prime is 681487099. The reversal of 681487095 is 590784186.

It is not a de Polignac number, because 681487095 - 25 = 681487063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681487099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782884 + ... + 783753.

It is an arithmetic number, because the mean of its divisors is an integer number (70498710).

Almost surely, 2681487095 is an apocalyptic number.

681487095 is a deficient number, since it is larger than the sum of its proper divisors (446492265).

681487095 is a wasteful number, since it uses less digits than its factorization.

681487095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566674.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 681487095 is about 26105.3077936270. The cubic root of 681487095 is about 880.0064974555.

The spelling of 681487095 in words is "six hundred eighty-one million, four hundred eighty-seven thousand, ninety-five".

Divisors: 1 3 5 15 29 87 145 435 1566637 4699911 7833185 23499555 45432473 136297419 227162365 681487095