697129 has 4 divisors (see below), whose sum is σ = 733840. Its totient is φ = 660420.

The previous prime is 697127. The next prime is 697133. The reversal of 697129 is 921796.

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.

It is a cyclic number.

It is not a de Polignac number, because 697129 - 2¹ = 697127 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 697094 and 697103.

It is not an unprimeable number, because it can be changed into a prime (697121) 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, 18327 + ... + 18364.

It is an arithmetic number, because the mean of its divisors is an integer number (183460).

2⁶⁹⁷¹²⁹ is an apocalyptic number.

It is an amenable number.

697129 is a deficient number, since it is larger than the sum of its proper divisors (36711).

697129 is a wasteful number, since it uses less digits than its factorization.

697129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36710.

The product of its digits is 6804, while the sum is 34.

The square root of 697129 is about 834.9425129912. The cubic root of 697129 is about 88.6688446774.

The spelling of 697129 in words is "six hundred ninety-seven thousand, one hundred twenty-nine".