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681482 = 21272683
BaseRepresentation
bin10100110011000001010
31021121211002
42212120022
5133301412
622335002
75535554
oct2463012
91247732
10681482
1142600a
1228a462
131ab259
1413a4d4
15d6dc2
hexa660a

681482 has 8 divisors (see below), whose sum is σ = 1030656. Its totient is φ = 337932.

The previous prime is 681481. The next prime is 681487. The reversal of 681482 is 284186.

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

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681482.

It is not an unprimeable number, because it can be changed into a prime (681481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088 + ... + 1595.

It is an arithmetic number, because the mean of its divisors is an integer number (128832).

681482 is a Friedman number, since it can be written as 88^(2+1)+6+4, using all its digits and the basic arithmetic operations.

2681482 is an apocalyptic number.

681482 is a deficient number, since it is larger than the sum of its proper divisors (349174).

681482 is a wasteful number, since it uses less digits than its factorization.

681482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812.

The product of its digits is 3072, while the sum is 29.

The square root of 681482 is about 825.5192305452. The cubic root of 681482 is about 88.0004304387. Note that the first 3 decimals are identical.

The spelling of 681482 in words is "six hundred eighty-one thousand, four hundred eighty-two".

Divisors: 1 2 127 254 2683 5366 340741 681482