70345147 has 2 divisors, whose sum is σ = 70345148. Its totient is φ = 70345146.

The previous prime is 70345141. The next prime is 70345157. The reversal of 70345147 is 74154307.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70345147 - 2¹⁹ = 69820859 is a prime.

It is not a weakly prime, because it can be changed into another prime (70345141) 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, 35172573 + 35172574.

It is an arithmetic number, because the mean of its divisors is an integer number (35172574).

Almost surely, 2^70345147 is an apocalyptic number.

70345147 is a deficient number, since it is larger than the sum of its proper divisors (1).

70345147 is an equidigital number, since it uses as much as digits as its factorization.

70345147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 70345147 is about 8387.2013806752. The cubic root of 70345147 is about 412.8047765351.

The spelling of 70345147 in words is "seventy million, three hundred forty-five thousand, one hundred forty-seven".