70069819 has 2 divisors, whose sum is σ = 70069820. Its totient is φ = 70069818.

The previous prime is 70069817. The next prime is 70069841. The reversal of 70069819 is 91896007.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70069819 - 2¹ = 70069817 is a prime.

It is a super-2 number, since 2×70069819² = 9819559069385522, which contains 22 as substring.

Together with 70069817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (70069817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35034909 + 35034910.

It is an arithmetic number, because the mean of its divisors is an integer number (35034910).

Almost surely, 2^70069819 is an apocalyptic number.

70069819 is a deficient number, since it is larger than the sum of its proper divisors (1).

70069819 is an equidigital number, since it uses as much as digits as its factorization.

70069819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 70069819 is about 8370.7717087494. The cubic root of 70069819 is about 412.2655054116.

The spelling of 70069819 in words is "seventy million, sixty-nine thousand, eight hundred nineteen".