129660626 has 8 divisors (see below), whose sum is σ = 197230464. Its totient is φ = 63917140.

The previous prime is 129660613. The next prime is 129660647. The reversal of 129660626 is 626066921.

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

It is a self number, because there is not a number n which added to its sum of digits gives 129660626.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456410 + ... + 456693.

It is an arithmetic number, because the mean of its divisors is an integer number (24653808).

Almost surely, 2^129660626 is an apocalyptic number.

129660626 is a deficient number, since it is larger than the sum of its proper divisors (67569838).

129660626 is an equidigital number, since it uses as much as digits as its factorization.

129660626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913176.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 129660626 is about 11386.8619909086. The cubic root of 129660626 is about 506.1384972944.

The spelling of 129660626 in words is "one hundred twenty-nine million, six hundred sixty thousand, six hundred twenty-six".