70849187 has 2 divisors, whose sum is σ = 70849188. Its totient is φ = 70849186.

The previous prime is 70849171. The next prime is 70849199. The reversal of 70849187 is 78194807.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70849187 - 2⁴ = 70849171 is a prime.

It is not a weakly prime, because it can be changed into another prime (70848187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35424593 + 35424594.

It is an arithmetic number, because the mean of its divisors is an integer number (35424594).

Almost surely, 2^70849187 is an apocalyptic number.

70849187 is a deficient number, since it is larger than the sum of its proper divisors (1).

70849187 is an equidigital number, since it uses as much as digits as its factorization.

70849187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 70849187 is about 8417.1959107532. The cubic root of 70849187 is about 413.7883797148.

The spelling of 70849187 in words is "seventy million, eight hundred forty-nine thousand, one hundred eighty-seven".