70285729 has 2 divisors, whose sum is σ = 70285730. Its totient is φ = 70285728.

The previous prime is 70285717. The next prime is 70285751. The reversal of 70285729 is 92758207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55845729 + 14440000 = 7473^2 + 3800^2 .

It is a cyclic number.

It is not a de Polignac number, because 70285729 - 2⁷ = 70285601 is a prime.

It is a super-2 number, since 2×70285729² = 9880167402122882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70285691 and 70285700.

It is not a weakly prime, because it can be changed into another prime (70285759) 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, 35142864 + 35142865.

It is an arithmetic number, because the mean of its divisors is an integer number (35142865).

Almost surely, 2^70285729 is an apocalyptic number.

It is an amenable number.

70285729 is a deficient number, since it is larger than the sum of its proper divisors (1).

70285729 is an equidigital number, since it uses as much as digits as its factorization.

70285729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 70285729 is about 8383.6584496269. The cubic root of 70285729 is about 412.6885167101.

The spelling of 70285729 in words is "seventy million, two hundred eighty-five thousand, seven hundred twenty-nine".