70719613 has 2 divisors, whose sum is σ = 70719614. Its totient is φ = 70719612.

The previous prime is 70719601. The next prime is 70719637. The reversal of 70719613 is 31691707.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44063044 + 26656569 = 6638^2 + 5163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70719613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70719673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35359806 + 35359807.

It is an arithmetic number, because the mean of its divisors is an integer number (35359807).

Almost surely, 2^70719613 is an apocalyptic number.

It is an amenable number.

70719613 is a deficient number, since it is larger than the sum of its proper divisors (1).

70719613 is an equidigital number, since it uses as much as digits as its factorization.

70719613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 70719613 is about 8409.4954069789. The cubic root of 70719613 is about 413.5359706342.

The spelling of 70719613 in words is "seventy million, seven hundred nineteen thousand, six hundred thirteen".