70318669 has 2 divisors, whose sum is σ = 70318670. Its totient is φ = 70318668.

The previous prime is 70318667. The next prime is 70318673. The reversal of 70318669 is 96681307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38812900 + 31505769 = 6230^2 + 5613^2 .

It is an emirp because it is prime and its reverse (96681307) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70318669 - 2¹ = 70318667 is a prime.

It is a super-2 number, since 2×70318669² = 9889430419863122, which contains 22 as substring.

Together with 70318667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70318663) 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, 35159334 + 35159335.

It is an arithmetic number, because the mean of its divisors is an integer number (35159335).

Almost surely, 2^70318669 is an apocalyptic number.

It is an amenable number.

70318669 is a deficient number, since it is larger than the sum of its proper divisors (1).

70318669 is an equidigital number, since it uses as much as digits as its factorization.

70318669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 70318669 is about 8385.6227556455. The cubic root of 70318669 is about 412.7529766265.

The spelling of 70318669 in words is "seventy million, three hundred eighteen thousand, six hundred sixty-nine".