129370665 has 16 divisors (see below), whose sum is σ = 207160128. Its totient is φ = 68942016.

The previous prime is 129370651. The next prime is 129370679. The reversal of 129370665 is 566073921.

It is an interprime number because it is at equal distance from previous prime (129370651) and next prime (129370679).

It is not a de Polignac number, because 129370665 - 2¹² = 129366569 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 21522 + ... + 26868.

It is an arithmetic number, because the mean of its divisors is an integer number (12947508).

Almost surely, 2^129370665 is an apocalyptic number.

129370665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129370665 is a deficient number, since it is larger than the sum of its proper divisors (77789463).

129370665 is a wasteful number, since it uses less digits than its factorization.

129370665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6968.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 129370665 is about 11374.1226035242. The cubic root of 129370665 is about 505.7609219633.

The spelling of 129370665 in words is "one hundred twenty-nine million, three hundred seventy thousand, six hundred sixty-five".