70575509 has 2 divisors, whose sum is σ = 70575510. Its totient is φ = 70575508.

The previous prime is 70575503. The next prime is 70575511. The reversal of 70575509 is 90557507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59830225 + 10745284 = 7735^2 + 3278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70575509 is a prime.

Together with 70575511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70575503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35287754 + 35287755.

It is an arithmetic number, because the mean of its divisors is an integer number (35287755).

Almost surely, 2^70575509 is an apocalyptic number.

It is an amenable number.

70575509 is a deficient number, since it is larger than the sum of its proper divisors (1).

70575509 is an equidigital number, since it uses as much as digits as its factorization.

70575509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55125, while the sum is 38.

The square root of 70575509 is about 8400.9231040404. The cubic root of 70575509 is about 413.2548948595.

The spelling of 70575509 in words is "seventy million, five hundred seventy-five thousand, five hundred nine".