129650617 has 8 divisors (see below), whose sum is σ = 131475456. Its totient is φ = 127838592.

The previous prime is 129650611. The next prime is 129650621. The reversal of 129650617 is 716056921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129650617 - 2⁷ = 129650489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129650611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18153 + ... + 24265.

It is an arithmetic number, because the mean of its divisors is an integer number (16434432).

Almost surely, 2^129650617 is an apocalyptic number.

It is an amenable number.

129650617 is a deficient number, since it is larger than the sum of its proper divisors (1824839).

129650617 is a wasteful number, since it uses less digits than its factorization.

129650617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6407.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 129650617 is about 11386.4224846964. The cubic root of 129650617 is about 506.1254733700.

The spelling of 129650617 in words is "one hundred twenty-nine million, six hundred fifty thousand, six hundred seventeen".