70904191 has 2 divisors, whose sum is σ = 70904192. Its totient is φ = 70904190.

The previous prime is 70904179. The next prime is 70904231. The reversal of 70904191 is 19140907.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70904191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70904591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35452095 + 35452096.

It is an arithmetic number, because the mean of its divisors is an integer number (35452096).

Almost surely, 2^70904191 is an apocalyptic number.

70904191 is a deficient number, since it is larger than the sum of its proper divisors (1).

70904191 is an equidigital number, since it uses as much as digits as its factorization.

70904191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 70904191 is about 8420.4626357463. The cubic root of 70904191 is about 413.8954340067.

The spelling of 70904191 in words is "seventy million, nine hundred four thousand, one hundred ninety-one".