70858379 has 2 divisors, whose sum is σ = 70858380. Its totient is φ = 70858378.

The previous prime is 70858357. The next prime is 70858427. The reversal of 70858379 is 97385807.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70858379 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (70858309) 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, 35429189 + 35429190.

It is an arithmetic number, because the mean of its divisors is an integer number (35429190).

Almost surely, 2^70858379 is an apocalyptic number.

70858379 is a deficient number, since it is larger than the sum of its proper divisors (1).

70858379 is an equidigital number, since it uses as much as digits as its factorization.

70858379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 70858379 is about 8417.7419181156. The cubic root of 70858379 is about 413.8062739607.

The spelling of 70858379 in words is "seventy million, eight hundred fifty-eight thousand, three hundred seventy-nine".