307697 has 4 divisors (see below), whose sum is σ = 331380. Its totient is φ = 284016.

The previous prime is 307693. The next prime is 307711. The reversal of 307697 is 796703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796703 = 149 ⋅5347.

It can be written as a sum of positive squares in 2 ways, for example, as 73441 + 234256 = 271^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 307697 - 2² = 307693 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 307697.

It is not an unprimeable number, because it can be changed into a prime (307691) 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, 11822 + ... + 11847.

It is an arithmetic number, because the mean of its divisors is an integer number (82845).

2³⁰⁷⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

307697 is a deficient number, since it is larger than the sum of its proper divisors (23683).

307697 is a wasteful number, since it uses less digits than its factorization.

307697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23682.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 307697 is about 554.7044257981. The cubic root of 307697 is about 67.5109812952.

The spelling of 307697 in words is "three hundred seven thousand, six hundred ninety-seven".