691301 has 8 divisors (see below), whose sum is σ = 763224. Its totient is φ = 622080.

The previous prime is 691297. The next prime is 691309. The reversal of 691301 is 103196.

It can be written as a sum of positive squares in 4 ways, for example, as 52900 + 638401 = 230^2 + 799^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 691301 - 2² = 691297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 691301.

It is not an unprimeable number, because it can be changed into a prime (691309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116 + ... + 1181.

It is an arithmetic number, because the mean of its divisors is an integer number (95403).

2⁶⁹¹³⁰¹ is an apocalyptic number.

It is an amenable number.

691301 is a deficient number, since it is larger than the sum of its proper divisors (71923).

691301 is a wasteful number, since it uses less digits than its factorization.

691301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 691301 is about 831.4451274738. The cubic root of 691301 is about 88.4210623222.

Adding to 691301 its reverse (103196), we get a palindrome (794497).

The spelling of 691301 in words is "six hundred ninety-one thousand, three hundred one".