70744273 has 2 divisors, whose sum is σ = 70744274. Its totient is φ = 70744272.

The previous prime is 70744237. The next prime is 70744319. The reversal of 70744273 is 37244707.

It is a happy number.

Together with previous prime (70744237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66716224 + 4028049 = 8168^2 + 2007^2 .

It is an emirp because it is prime and its reverse (37244707) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70744273 is a prime.

It is not a weakly prime, because it can be changed into another prime (70744213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35372136 + 35372137.

It is an arithmetic number, because the mean of its divisors is an integer number (35372137).

Almost surely, 2^70744273 is an apocalyptic number.

It is an amenable number.

70744273 is a deficient number, since it is larger than the sum of its proper divisors (1).

70744273 is an equidigital number, since it uses as much as digits as its factorization.

70744273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 70744273 is about 8410.9614789274. The cubic root of 70744273 is about 413.5840318509.

It can be divided in two parts, 70744 and 273, that added together give a palindrome (71017).

The spelling of 70744273 in words is "seventy million, seven hundred forty-four thousand, two hundred seventy-three".