70694609 has 2 divisors, whose sum is σ = 70694610. Its totient is φ = 70694608.

The previous prime is 70694597. The next prime is 70694621. The reversal of 70694609 is 90649607.

It is a balanced prime because it is at equal distance from previous prime (70694597) and next prime (70694621).

It can be written as a sum of positive squares in only one way, i.e., 57532225 + 13162384 = 7585^2 + 3628^2 .

It is an emirp because it is prime and its reverse (90649607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70694609 - 2¹⁶ = 70629073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (70697609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35347304 + 35347305.

It is an arithmetic number, because the mean of its divisors is an integer number (35347305).

Almost surely, 2^70694609 is an apocalyptic number.

It is an amenable number.

70694609 is a deficient number, since it is larger than the sum of its proper divisors (1).

70694609 is an equidigital number, since it uses as much as digits as its factorization.

70694609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 70694609 is about 8408.0086227358. The cubic root of 70694609 is about 413.4872275682.

The spelling of 70694609 in words is "seventy million, six hundred ninety-four thousand, six hundred nine".