70731719 has 2 divisors, whose sum is σ = 70731720. Its totient is φ = 70731718.

The previous prime is 70731707. The next prime is 70731751. The reversal of 70731719 is 91713707.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70731719 - 2¹² = 70727623 is a prime.

It is a super-2 number, since 2×70731719² = 10005952145389922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70731769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35365859 + 35365860.

It is an arithmetic number, because the mean of its divisors is an integer number (35365860).

Almost surely, 2^70731719 is an apocalyptic number.

70731719 is a deficient number, since it is larger than the sum of its proper divisors (1).

70731719 is an equidigital number, since it uses as much as digits as its factorization.

70731719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9261, while the sum is 35.

The square root of 70731719 is about 8410.2151577709. The cubic root of 70731719 is about 413.5595660726.

The spelling of 70731719 in words is "seventy million, seven hundred thirty-one thousand, seven hundred nineteen".