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9906731 is a prime number
BaseRepresentation
bin100101110010…
…101000101011
3200122022110222
4211302220223
510014003411
6552200255
7150130412
oct45625053
920568428
109906731
11565708a
12339908b
13208b293
14145c479
15d0a4db
hex972a2b

9906731 has 2 divisors, whose sum is σ = 9906732. Its totient is φ = 9906730.

The previous prime is 9906703. The next prime is 9906737. The reversal of 9906731 is 1376099.

9906731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9906731 - 218 = 9644587 is a prime.

It is a super-2 number, since 2×99067312 = 196286638212722, which contains 22 as substring.

It is equal to p658853 and since 9906731 and 658853 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 9906691 and 9906700.

It is not a weakly prime, because it can be changed into another prime (9906737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4953365 + 4953366.

It is an arithmetic number, because the mean of its divisors is an integer number (4953366).

Almost surely, 29906731 is an apocalyptic number.

9906731 is a deficient number, since it is larger than the sum of its proper divisors (1).

9906731 is an equidigital number, since it uses as much as digits as its factorization.

9906731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 9906731 is about 3147.4959888775. The cubic root of 9906731 is about 214.7715691755.

The spelling of 9906731 in words is "nine million, nine hundred six thousand, seven hundred thirty-one".