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1681801 = 11473253
BaseRepresentation
bin110011010100110001001
310011102222221
412122212021
5412304201
6100014041
720203132
oct6324611
93142887
101681801
11a49620
12691321
1346b664
1431ac89
152334a1
hex19a989

1681801 has 8 divisors (see below), whose sum is σ = 1874304. Its totient is φ = 1495920.

The previous prime is 1681787. The next prime is 1681807. The reversal of 1681801 is 1081861.

1681801 = 3862 + 3872 + ... + 3962.

It is a happy number.

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 1681801 - 29 = 1681289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681807) 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, 1110 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (234288).

21681801 is an apocalyptic number.

1681801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1681801 is a deficient number, since it is larger than the sum of its proper divisors (192503).

1681801 is a wasteful number, since it uses less digits than its factorization.

1681801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 1681801 is about 1296.8427044172. The cubic root of 1681801 is about 118.9209040567.

The spelling of 1681801 in words is "one million, six hundred eighty-one thousand, eight hundred one".

Divisors: 1 11 47 517 3253 35783 152891 1681801