129596690 has 8 divisors (see below), whose sum is σ = 233274060. Its totient is φ = 51838672.

The previous prime is 129596683. The next prime is 129596699. The reversal of 129596690 is 96695921.

It can be written as a sum of positive squares in 2 ways, for example, as 127215841 + 2380849 = 11279^2 + 1543^2 .

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

It is a super-2 number, since 2×129596690² = 33590604117912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129596699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6479825 + ... + 6479844.

Almost surely, 2^129596690 is an apocalyptic number.

129596690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129596690 is a deficient number, since it is larger than the sum of its proper divisors (103677370).

129596690 is a wasteful number, since it uses less digits than its factorization.

129596690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12959676.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 129596690 is about 11384.0541987466. The cubic root of 129596690 is about 506.0552908695.

The spelling of 129596690 in words is "one hundred twenty-nine million, five hundred ninety-six thousand, six hundred ninety".