70765811 has 2 divisors, whose sum is σ = 70765812. Its totient is φ = 70765810.

The previous prime is 70765787. The next prime is 70765819. The reversal of 70765811 is 11856707.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70765811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70765819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35382905 + 35382906.

It is an arithmetic number, because the mean of its divisors is an integer number (35382906).

Almost surely, 2^70765811 is an apocalyptic number.

70765811 is a deficient number, since it is larger than the sum of its proper divisors (1).

70765811 is an equidigital number, since it uses as much as digits as its factorization.

70765811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 70765811 is about 8412.2417345200. The cubic root of 70765811 is about 413.6259992953.

The spelling of 70765811 in words is "seventy million, seven hundred sixty-five thousand, eight hundred eleven".