129340664 has 8 divisors (see below), whose sum is σ = 242513760. Its totient is φ = 64670328.

The previous prime is 129340639. The next prime is 129340699. The reversal of 129340664 is 466043921.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8083784 + ... + 8083799.

It is an arithmetic number, because the mean of its divisors is an integer number (30314220).

Almost surely, 2^129340664 is an apocalyptic number.

It is an amenable number.

129340664 is a deficient number, since it is larger than the sum of its proper divisors (113173096).

129340664 is a wasteful number, since it uses less digits than its factorization.

129340664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16167589 (or 16167585 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 129340664 is about 11372.8037000557. The cubic root of 129340664 is about 505.7218236961.

The spelling of 129340664 in words is "one hundred twenty-nine million, three hundred forty thousand, six hundred sixty-four".