70745273 has 2 divisors, whose sum is σ = 70745274. Its totient is φ = 70745272.

The previous prime is 70745219. The next prime is 70745281. The reversal of 70745273 is 37254707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44448889 + 26296384 = 6667^2 + 5128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70745273 is a prime.

It is not a weakly prime, because it can be changed into another prime (70745203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35372636 + 35372637.

It is an arithmetic number, because the mean of its divisors is an integer number (35372637).

Almost surely, 2^70745273 is an apocalyptic number.

It is an amenable number.

70745273 is a deficient number, since it is larger than the sum of its proper divisors (1).

70745273 is an equidigital number, since it uses as much as digits as its factorization.

70745273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 70745273 is about 8411.0209249532. The cubic root of 70745273 is about 413.5859805697.

The spelling of 70745273 in words is "seventy million, seven hundred forty-five thousand, two hundred seventy-three".