70070771 has 2 divisors, whose sum is σ = 70070772. Its totient is φ = 70070770.

The previous prime is 70070743. The next prime is 70070783. The reversal of 70070771 is 17707007.

It is a strong prime.

It is an emirp because it is prime and its reverse (17707007) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70070771 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70070731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35035385 + 35035386.

It is an arithmetic number, because the mean of its divisors is an integer number (35035386).

Almost surely, 2^70070771 is an apocalyptic number.

70070771 is a deficient number, since it is larger than the sum of its proper divisors (1).

70070771 is an equidigital number, since it uses as much as digits as its factorization.

70070771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2401, while the sum is 29.

The square root of 70070771 is about 8370.8285730864. The cubic root of 70070771 is about 412.2673724779.

Adding to 70070771 its reverse (17707007), we get a palindrome (87777778).

The spelling of 70070771 in words is "seventy million, seventy thousand, seven hundred seventy-one".