129706697 has 4 divisors (see below), whose sum is σ = 133890816. Its totient is φ = 125522580.

The previous prime is 129706693. The next prime is 129706723. The reversal of 129706697 is 796607921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 796607921 = 23 ⋅34635127.

It is a cyclic number.

It is not a de Polignac number, because 129706697 - 2² = 129706693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129706691) 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, 2092013 + ... + 2092074.

It is an arithmetic number, because the mean of its divisors is an integer number (33472704).

Almost surely, 2^129706697 is an apocalyptic number.

It is an amenable number.

129706697 is a deficient number, since it is larger than the sum of its proper divisors (4184119).

129706697 is an equidigital number, since it uses as much as digits as its factorization.

129706697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184118.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 129706697 is about 11388.8848005413. The cubic root of 129706697 is about 506.1984372216.

The spelling of 129706697 in words is "one hundred twenty-nine million, seven hundred six thousand, six hundred ninety-seven".