70391227 has 2 divisors, whose sum is σ = 70391228. Its totient is φ = 70391226.

The previous prime is 70391197. The next prime is 70391231. The reversal of 70391227 is 72219307.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70391227 - 2¹⁵ = 70358459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70391287) 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, 35195613 + 35195614.

It is an arithmetic number, because the mean of its divisors is an integer number (35195614).

Almost surely, 2^70391227 is an apocalyptic number.

70391227 is a deficient number, since it is larger than the sum of its proper divisors (1).

70391227 is an equidigital number, since it uses as much as digits as its factorization.

70391227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 70391227 is about 8389.9479736170. The cubic root of 70391227 is about 412.8948935885.

The spelling of 70391227 in words is "seventy million, three hundred ninety-one thousand, two hundred twenty-seven".