306697 has 4 divisors (see below), whose sum is σ = 324756. Its totient is φ = 288640.

The previous prime is 306689. The next prime is 306701. The reversal of 306697 is 796603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109561 + 197136 = 331^2 + 444^2 .

It is a cyclic number.

It is not a de Polignac number, because 306697 - 2³ = 306689 is a prime.

It is a Duffinian number.

306697 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306697.

It is not an unprimeable number, because it can be changed into a prime (316697) 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, 9004 + ... + 9037.

It is an arithmetic number, because the mean of its divisors is an integer number (81189).

2³⁰⁶⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

306697 is a deficient number, since it is larger than the sum of its proper divisors (18059).

306697 is a wasteful number, since it uses less digits than its factorization.

306697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18058.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 306697 is about 553.8023112989. The cubic root of 306697 is about 67.4377661416.

The spelling of 306697 in words is "three hundred six thousand, six hundred ninety-seven".