70523617 has 2 divisors, whose sum is σ = 70523618. Its totient is φ = 70523616.

The previous prime is 70523539. The next prime is 70523657. The reversal of 70523617 is 71632507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41783296 + 28740321 = 6464^2 + 5361^2 .

It is an emirp because it is prime and its reverse (71632507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70523617 - 2⁷ = 70523489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70523657) 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, 35261808 + 35261809.

It is an arithmetic number, because the mean of its divisors is an integer number (35261809).

Almost surely, 2^70523617 is an apocalyptic number.

It is an amenable number.

70523617 is a deficient number, since it is larger than the sum of its proper divisors (1).

70523617 is an equidigital number, since it uses as much as digits as its factorization.

70523617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 70523617 is about 8397.8340659958. The cubic root of 70523617 is about 413.1535854898.

The spelling of 70523617 in words is "seventy million, five hundred twenty-three thousand, six hundred seventeen".