70804709 has 2 divisors, whose sum is σ = 70804710. Its totient is φ = 70804708.

The previous prime is 70804693. The next prime is 70804753. The reversal of 70804709 is 90740807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68392900 + 2411809 = 8270^2 + 1553^2 .

It is an emirp because it is prime and its reverse (90740807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70804709 - 2⁴ = 70804693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70804759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35402354 + 35402355.

It is an arithmetic number, because the mean of its divisors is an integer number (35402355).

Almost surely, 2^70804709 is an apocalyptic number.

It is an amenable number.

70804709 is a deficient number, since it is larger than the sum of its proper divisors (1).

70804709 is an equidigital number, since it uses as much as digits as its factorization.

70804709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 70804709 is about 8414.5534046674. The cubic root of 70804709 is about 413.7017716533.

The spelling of 70804709 in words is "seventy million, eight hundred four thousand, seven hundred nine".