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1083681 = 323472
BaseRepresentation
bin100001000100100100001
32001001112100
410020210201
5234134211
635121013
712132264
oct4104441
92031470
101083681
11680205
12443169
132bc341
14202cdb
15166156
hex108921

1083681 has 9 divisors (see below), whose sum is σ = 1569841. Its totient is φ = 720372.

The previous prime is 1083659. The next prime is 1083689. The reversal of 1083681 is 1863801.

The square root of 1083681 is 1041.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1083681 - 213 = 1075489 is a prime.

It is a super-2 number, since 2×10836812 = 2348729019522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1083689) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2950 + ... + 3296.

21083681 is an apocalyptic number.

1083681 is the 1041-st square number.

1083681 is the 521-st centered octagonal number.

It is an amenable number.

1083681 is a deficient number, since it is larger than the sum of its proper divisors (486160).

1083681 is an frugal number, since it uses more digits than its factorization.

1083681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The cubic root of 1083681 is about 102.7149879822.

It can be divided in two parts, 1083 and 681, that added together give a square (1764 = 422).

The spelling of 1083681 in words is "one million, eighty-three thousand, six hundred eighty-one".

Divisors: 1 3 9 347 1041 3123 120409 361227 1083681