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70000643 is a prime number
BaseRepresentation
bin1000010110000…
…10000000000011
311212201101211102
410023002000003
5120410010033
610540205015
71506665336
oct413020003
9155641742
1070000643
1136571579
121b53976b
131166bbcb
14942261d
15622ade8
hex42c2003

70000643 has 2 divisors, whose sum is σ = 70000644. Its totient is φ = 70000642.

The previous prime is 70000639. The next prime is 70000663. The reversal of 70000643 is 34600007.

It is an a-pointer prime, because the next prime (70000663) can be obtained adding 70000643 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70000643 - 22 = 70000639 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (70000613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35000321 + 35000322.

It is an arithmetic number, because the mean of its divisors is an integer number (35000322).

Almost surely, 270000643 is an apocalyptic number.

70000643 is a deficient number, since it is larger than the sum of its proper divisors (1).

70000643 is an equidigital number, since it uses as much as digits as its factorization.

70000643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 70000643 is about 8366.6386918523. The cubic root of 70000643 is about 412.1297918753.

The spelling of 70000643 in words is "seventy million, six hundred forty-three", and thus it is an aban number.