70726519 has 2 divisors, whose sum is σ = 70726520. Its totient is φ = 70726518.

The previous prime is 70726489. The next prime is 70726559. The reversal of 70726519 is 91562707.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70726519 - 2¹⁵ = 70693751 is a prime.

It is a super-2 number, since 2×70726519² = 10004480979714722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70726559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35363259 + 35363260.

It is an arithmetic number, because the mean of its divisors is an integer number (35363260).

Almost surely, 2^70726519 is an apocalyptic number.

70726519 is a deficient number, since it is larger than the sum of its proper divisors (1).

70726519 is an equidigital number, since it uses as much as digits as its factorization.

70726519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 70726519 is about 8409.9060042310. The cubic root of 70726519 is about 413.5494312398.

The spelling of 70726519 in words is "seventy million, seven hundred twenty-six thousand, five hundred nineteen".