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682912993 = 7257379607
BaseRepresentation
bin101000101101000…
…110110011100001
31202121000120111211
4220231012303201
52344311203433
6151433110121
722631443660
oct5055066341
91677016454
10682912993
11320539704
12170858341
13ab638b39
14669aadd7
153ee498cd
hex28b46ce1

682912993 has 8 divisors (see below), whose sum is σ = 783510912. Its totient is φ = 583074816.

The previous prime is 682912949. The next prime is 682913009. The reversal of 682912993 is 399219286.

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 682912993 - 229 = 146042081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (682912903) 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, 188005 + ... + 191602.

It is an arithmetic number, because the mean of its divisors is an integer number (97938864).

Almost surely, 2682912993 is an apocalyptic number.

It is an amenable number.

682912993 is a deficient number, since it is larger than the sum of its proper divisors (100597919).

682912993 is a wasteful number, since it uses less digits than its factorization.

682912993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379871.

The product of its digits is 419904, while the sum is 49.

The square root of 682912993 is about 26132.6040225615. The cubic root of 682912993 is about 880.6198254637.

The spelling of 682912993 in words is "six hundred eighty-two million, nine hundred twelve thousand, nine hundred ninety-three".

Divisors: 1 7 257 1799 379607 2657249 97558999 682912993