34691609 has 2 divisors, whose sum is σ = 34691610. Its totient is φ = 34691608.

The previous prime is 34691597. The next prime is 34691623. The reversal of 34691609 is 90619643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18731584 + 15960025 = 4328^2 + 3995^2 .

It is a cyclic number.

It is not a de Polignac number, because 34691609 - 2⁸ = 34691353 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 (34691689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17345804 + 17345805.

It is an arithmetic number, because the mean of its divisors is an integer number (17345805).

Almost surely, 2^34691609 is an apocalyptic number.

It is an amenable number.

34691609 is a deficient number, since it is larger than the sum of its proper divisors (1).

34691609 is an equidigital number, since it uses as much as digits as its factorization.

34691609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 34691609 is about 5889.9583190376. The cubic root of 34691609 is about 326.1430645360.

The spelling of 34691609 in words is "thirty-four million, six hundred ninety-one thousand, six hundred nine".