70745737 has 2 divisors, whose sum is σ = 70745738. Its totient is φ = 70745736.

The previous prime is 70745713. The next prime is 70745747. The reversal of 70745737 is 73754707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68740681 + 2005056 = 8291^2 + 1416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70745737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70745737.

It is not a weakly prime, because it can be changed into another prime (70745747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35372868 + 35372869.

It is an arithmetic number, because the mean of its divisors is an integer number (35372869).

Almost surely, 2^70745737 is an apocalyptic number.

It is an amenable number.

70745737 is a deficient number, since it is larger than the sum of its proper divisors (1).

70745737 is an equidigital number, since it uses as much as digits as its factorization.

70745737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144060, while the sum is 40.

The square root of 70745737 is about 8411.0485077664. The cubic root of 70745737 is about 413.5868847689.

The spelling of 70745737 in words is "seventy million, seven hundred forty-five thousand, seven hundred thirty-seven".