70217243 has 2 divisors, whose sum is σ = 70217244. Its totient is φ = 70217242.

The previous prime is 70217239. The next prime is 70217309. The reversal of 70217243 is 34271207.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70217243 - 2² = 70217239 is a prime.

It is a super-2 number, since 2×70217243² = 9860922429042098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70217143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35108621 + 35108622.

It is an arithmetic number, because the mean of its divisors is an integer number (35108622).

Almost surely, 2^70217243 is an apocalyptic number.

70217243 is a deficient number, since it is larger than the sum of its proper divisors (1).

70217243 is an equidigital number, since it uses as much as digits as its factorization.

70217243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 70217243 is about 8379.5729604795. The cubic root of 70217243 is about 412.5544327311.

The spelling of 70217243 in words is "seventy million, two hundred seventeen thousand, two hundred forty-three".