129006617 has 2 divisors, whose sum is σ = 129006618. Its totient is φ = 129006616.

The previous prime is 129006613. The next prime is 129006677. The reversal of 129006617 is 716600921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126247696 + 2758921 = 11236^2 + 1661^2 .

It is an emirp because it is prime and its reverse (716600921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129006617 - 2² = 129006613 is a prime.

It is not a weakly prime, because it can be changed into another prime (129006613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64503308 + 64503309.

It is an arithmetic number, because the mean of its divisors is an integer number (64503309).

Almost surely, 2^129006617 is an apocalyptic number.

It is an amenable number.

129006617 is a deficient number, since it is larger than the sum of its proper divisors (1).

129006617 is an equidigital number, since it uses as much as digits as its factorization.

129006617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 129006617 is about 11358.1079850475. The cubic root of 129006617 is about 505.2860739033.

The spelling of 129006617 in words is "one hundred twenty-nine million, six thousand, six hundred seventeen".