129648673 has 8 divisors (see below), whose sum is σ = 161640000. Its totient is φ = 101024880.

The previous prime is 129648667. The next prime is 129648689. The reversal of 129648673 is 376846921.

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

It is not a de Polignac number, because 129648673 - 2⁹ = 129648161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129648173) 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, 841798 + ... + 841951.

It is an arithmetic number, because the mean of its divisors is an integer number (20205000).

Almost surely, 2^129648673 is an apocalyptic number.

It is an amenable number.

129648673 is a deficient number, since it is larger than the sum of its proper divisors (31991327).

129648673 is a wasteful number, since it uses less digits than its factorization.

129648673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683767.

The product of its digits is 435456, while the sum is 46.

The square root of 129648673 is about 11386.3371195481. The cubic root of 129648673 is about 506.1229437180.

It can be divided in two parts, 129648 and 673, that added together give a 4-th power (130321 = 19⁴).

The spelling of 129648673 in words is "one hundred twenty-nine million, six hundred forty-eight thousand, six hundred seventy-three".