70626389 has 2 divisors, whose sum is σ = 70626390. Its totient is φ = 70626388.

The previous prime is 70626341. The next prime is 70626461. The reversal of 70626389 is 98362607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36602500 + 34023889 = 6050^2 + 5833^2 .

It is a cyclic number.

It is not a de Polignac number, because 70626389 - 2⁸ = 70626133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70626319) 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, 35313194 + 35313195.

It is an arithmetic number, because the mean of its divisors is an integer number (35313195).

Almost surely, 2^70626389 is an apocalyptic number.

It is an amenable number.

70626389 is a deficient number, since it is larger than the sum of its proper divisors (1).

70626389 is an equidigital number, since it uses as much as digits as its factorization.

70626389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 70626389 is about 8403.9507970954. The cubic root of 70626389 is about 413.3541802845.

The spelling of 70626389 in words is "seventy million, six hundred twenty-six thousand, three hundred eighty-nine".