129264664 has 32 divisors (see below), whose sum is σ = 249569280. Its totient is φ = 62735904.

The previous prime is 129264649. The next prime is 129264697. The reversal of 129264664 is 466462921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46399 + ... + 49105.

It is an arithmetic number, because the mean of its divisors is an integer number (7799040).

Almost surely, 2^129264664 is an apocalyptic number.

It is an amenable number.

129264664 is a deficient number, since it is larger than the sum of its proper divisors (120304616).

129264664 is a wasteful number, since it uses less digits than its factorization.

129264664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 2883 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 129264664 is about 11369.4619045934. The cubic root of 129264664 is about 505.6227509891.

It can be divided in two parts, 1292 and 64664, that added together give a palindrome (65956).

The spelling of 129264664 in words is "one hundred twenty-nine million, two hundred sixty-four thousand, six hundred sixty-four".