70855823 has 2 divisors, whose sum is σ = 70855824. Its totient is φ = 70855822.

The previous prime is 70855751. The next prime is 70855853. The reversal of 70855823 is 32855807.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70855823 - 2⁸ = 70855567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70855853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35427911 + 35427912.

It is an arithmetic number, because the mean of its divisors is an integer number (35427912).

Almost surely, 2^70855823 is an apocalyptic number.

70855823 is a deficient number, since it is larger than the sum of its proper divisors (1).

70855823 is an equidigital number, since it uses as much as digits as its factorization.

70855823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 70855823 is about 8417.5900945579. The cubic root of 70855823 is about 413.8012983009.

The spelling of 70855823 in words is "seventy million, eight hundred fifty-five thousand, eight hundred twenty-three".