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70489 is a prime number
BaseRepresentation
bin10001001101011001
310120200201
4101031121
54223424
61302201
7412336
oct211531
9116621
1070489
1148a61
1234961
1326113
141b98d
1515d44
hex11359

70489 has 2 divisors, whose sum is σ = 70490. Its totient is φ = 70488.

The previous prime is 70487. The next prime is 70501. The reversal of 70489 is 98407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43264 + 27225 = 208^2 + 165^2 .

It is an emirp because it is prime and its reverse (98407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70489 - 21 = 70487 is a prime.

Together with 70487, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p6985 and since 70489 and 6985 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (70481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35244 + 35245.

It is an arithmetic number, because the mean of its divisors is an integer number (35245).

270489 is an apocalyptic number.

It is an amenable number.

70489 is a deficient number, since it is larger than the sum of its proper divisors (1).

70489 is an equidigital number, since it uses as much as digits as its factorization.

70489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 70489 is about 265.4976459406. The cubic root of 70489 is about 41.3085974671.

The spelling of 70489 in words is "seventy thousand, four hundred eighty-nine".