70557439 has 2 divisors, whose sum is σ = 70557440. Its totient is φ = 70557438.

The previous prime is 70557437. The next prime is 70557479. The reversal of 70557439 is 93475507.

It is an a-pointer prime, because the next prime (70557479) can be obtained adding 70557439 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70557439 - 2¹ = 70557437 is a prime.

It is a super-3 number, since 3×70557439³ (a number of 25 digits) contains 333 as substring.

Together with 70557437, 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 (70557437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35278719 + 35278720.

It is an arithmetic number, because the mean of its divisors is an integer number (35278720).

Almost surely, 2^70557439 is an apocalyptic number.

70557439 is a deficient number, since it is larger than the sum of its proper divisors (1).

70557439 is an equidigital number, since it uses as much as digits as its factorization.

70557439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 70557439 is about 8399.8475581406. The cubic root of 70557439 is about 413.2196222205.

The spelling of 70557439 in words is "seventy million, five hundred fifty-seven thousand, four hundred thirty-nine".