129700691 has 2 divisors, whose sum is σ = 129700692. Its totient is φ = 129700690.

The previous prime is 129700661. The next prime is 129700721. The reversal of 129700691 is 196007921.

It is a balanced prime because it is at equal distance from previous prime (129700661) and next prime (129700721).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129700691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129700661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64850345 + 64850346.

It is an arithmetic number, because the mean of its divisors is an integer number (64850346).

Almost surely, 2^129700691 is an apocalyptic number.

129700691 is a deficient number, since it is larger than the sum of its proper divisors (1).

129700691 is an equidigital number, since it uses as much as digits as its factorization.

129700691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 129700691 is about 11388.6211193454. The cubic root of 129700691 is about 506.1906240174.

The spelling of 129700691 in words is "one hundred twenty-nine million, seven hundred thousand, six hundred ninety-one".