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653641 is a prime number
BaseRepresentation
bin10011111100101001001
31020012121221
42133211021
5131404031
622002041
75361442
oct2374511
91205557
10653641
114070aa
12276321
1319b691
141302c9
15cda11
hex9f949

653641 has 2 divisors, whose sum is σ = 653642. Its totient is φ = 653640.

The previous prime is 653623. The next prime is 653647. The reversal of 653641 is 146356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646416 + 7225 = 804^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 653641 - 217 = 522569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326820 + 326821.

It is an arithmetic number, because the mean of its divisors is an integer number (326821).

2653641 is an apocalyptic number.

It is an amenable number.

653641 is a deficient number, since it is larger than the sum of its proper divisors (1).

653641 is an equidigital number, since it uses as much as digits as its factorization.

653641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 653641 is about 808.4806738568. The cubic root of 653641 is about 86.7853518572.

Adding to 653641 its reverse (146356), we get a palindrome (799997).

The spelling of 653641 in words is "six hundred fifty-three thousand, six hundred forty-one".