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698891 is a prime number
BaseRepresentation
bin10101010101000001011
31022111200212
42222220023
5134331031
622551335
75640404
oct2525013
91274625
10698891
114380a6
1229854b
131b615b
141429ab
15dc12b
hexaaa0b

698891 has 2 divisors, whose sum is σ = 698892. Its totient is φ = 698890.

The previous prime is 698849. The next prime is 698899. The reversal of 698891 is 198896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698891 - 26 = 698827 is a prime.

It is a Sophie Germain prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698891.

It is not a weakly prime, because it can be changed into another prime (698899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349445 + 349446.

It is an arithmetic number, because the mean of its divisors is an integer number (349446).

2698891 is an apocalyptic number.

698891 is a deficient number, since it is larger than the sum of its proper divisors (1).

698891 is an equidigital number, since it uses as much as digits as its factorization.

698891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 41.

The square root of 698891 is about 835.9970095640. The cubic root of 698891 is about 88.7434856026.

The spelling of 698891 in words is "six hundred ninety-eight thousand, eight hundred ninety-one".