70681337 has 2 divisors, whose sum is σ = 70681338. Its totient is φ = 70681336.

The previous prime is 70681327. The next prime is 70681339. The reversal of 70681337 is 73318607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61293241 + 9388096 = 7829^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 70681337 - 2⁴ = 70681321 is a prime.

Together with 70681339, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70681297 and 70681306.

It is not a weakly prime, because it can be changed into another prime (70681339) 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, 35340668 + 35340669.

It is an arithmetic number, because the mean of its divisors is an integer number (35340669).

Almost surely, 2^70681337 is an apocalyptic number.

It is an amenable number.

70681337 is a deficient number, since it is larger than the sum of its proper divisors (1).

70681337 is an equidigital number, since it uses as much as digits as its factorization.

70681337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 70681337 is about 8407.2193381641. The cubic root of 70681337 is about 413.4613503195.

The spelling of 70681337 in words is "seventy million, six hundred eighty-one thousand, three hundred thirty-seven".