70000771 has 2 divisors, whose sum is σ = 70000772. Its totient is φ = 70000770.

The previous prime is 70000739. The next prime is 70000783. The reversal of 70000771 is 17700007.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70000771 - 2⁵ = 70000739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70030771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35000385 + 35000386.

It is an arithmetic number, because the mean of its divisors is an integer number (35000386).

Almost surely, 2^70000771 is an apocalyptic number.

70000771 is a deficient number, since it is larger than the sum of its proper divisors (1).

70000771 is an equidigital number, since it uses as much as digits as its factorization.

70000771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 343, while the sum is 22.

The square root of 70000771 is about 8366.6463412768. The cubic root of 70000771 is about 412.1300430758.

Adding to 70000771 its reverse (17700007), we get a palindrome (87700778).

The spelling of 70000771 in words is "seventy million, seven hundred seventy-one", and thus it is an aban number.