70855919 has 2 divisors, whose sum is σ = 70855920. Its totient is φ = 70855918.

The previous prime is 70855909. The next prime is 70855927. The reversal of 70855919 is 91955807.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70855919 is a prime.

It is a super-2 number, since 2×70855919² = 10041122514669122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70855919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70855909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35427959 + 35427960.

It is an arithmetic number, because the mean of its divisors is an integer number (35427960).

Almost surely, 2^70855919 is an apocalyptic number.

70855919 is a deficient number, since it is larger than the sum of its proper divisors (1).

70855919 is an equidigital number, since it uses as much as digits as its factorization.

70855919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 70855919 is about 8417.5957969007. The cubic root of 70855919 is about 413.8014851823.

The spelling of 70855919 in words is "seventy million, eight hundred fifty-five thousand, nine hundred nineteen".