70866437 has 2 divisors, whose sum is σ = 70866438. Its totient is φ = 70866436.

The previous prime is 70866413. The next prime is 70866443. The reversal of 70866437 is 73466807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42627841 + 28238596 = 6529^2 + 5314^2 .

It is a cyclic number.

It is not a de Polignac number, because 70866437 - 2⁶ = 70866373 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70866394 and 70866403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70266437) 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, 35433218 + 35433219.

It is an arithmetic number, because the mean of its divisors is an integer number (35433219).

Almost surely, 2^70866437 is an apocalyptic number.

It is an amenable number.

70866437 is a deficient number, since it is larger than the sum of its proper divisors (1).

70866437 is an equidigital number, since it uses as much as digits as its factorization.

70866437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 70866437 is about 8418.2205364317. The cubic root of 70866437 is about 413.8219593537.

The spelling of 70866437 in words is "seventy million, eight hundred sixty-six thousand, four hundred thirty-seven".