70520719 has 2 divisors, whose sum is σ = 70520720. Its totient is φ = 70520718.

The previous prime is 70520717. The next prime is 70520729. The reversal of 70520719 is 91702507.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70520719 - 2¹ = 70520717 is a prime.

It is a super-2 number, since 2×70520719² = 9946343616553922, which contains 22 as substring.

Together with 70520717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70520713) 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, 35260359 + 35260360.

It is an arithmetic number, because the mean of its divisors is an integer number (35260360).

Almost surely, 2^70520719 is an apocalyptic number.

70520719 is a deficient number, since it is larger than the sum of its proper divisors (1).

70520719 is an equidigital number, since it uses as much as digits as its factorization.

70520719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 70520719 is about 8397.6615197327. The cubic root of 70520719 is about 413.1479262249.

The spelling of 70520719 in words is "seventy million, five hundred twenty thousand, seven hundred nineteen".