70615717 has 2 divisors, whose sum is σ = 70615718. Its totient is φ = 70615716.

The previous prime is 70615711. The next prime is 70615729. The reversal of 70615717 is 71751607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62948356 + 7667361 = 7934^2 + 2769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70615717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70615711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35307858 + 35307859.

It is an arithmetic number, because the mean of its divisors is an integer number (35307859).

Almost surely, 2^70615717 is an apocalyptic number.

It is an amenable number.

70615717 is a deficient number, since it is larger than the sum of its proper divisors (1).

70615717 is an equidigital number, since it uses as much as digits as its factorization.

70615717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10290, while the sum is 34.

The square root of 70615717 is about 8403.3158336457. The cubic root of 70615717 is about 413.3333592756. Note that the first 4 decimals are identical.

The spelling of 70615717 in words is "seventy million, six hundred fifteen thousand, seven hundred seventeen".