70034891 has 2 divisors, whose sum is σ = 70034892. Its totient is φ = 70034890.

The previous prime is 70034869. The next prime is 70034927. The reversal of 70034891 is 19843007.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70034891 is a prime.

It is equal to p_4119980 and since 70034891 and 4119980 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70034791) 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, 35017445 + 35017446.

It is an arithmetic number, because the mean of its divisors is an integer number (35017446).

Almost surely, 2^70034891 is an apocalyptic number.

70034891 is a deficient number, since it is larger than the sum of its proper divisors (1).

70034891 is an equidigital number, since it uses as much as digits as its factorization.

70034891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 70034891 is about 8368.6851416456. The cubic root of 70034891 is about 412.1969927812.

Adding to 70034891 its reverse (19843007), we get a palindrome (89877898).

The spelling of 70034891 in words is "seventy million, thirty-four thousand, eight hundred ninety-one".