207397 has 4 divisors (see below), whose sum is σ = 208876. Its totient is φ = 205920.

The previous prime is 207377. The next prime is 207401. The reversal of 207397 is 793702.

It is a happy number.

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 133956 + 73441 = 366^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 207397 - 2⁷ = 207269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207307) 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, 504 + ... + 817.

It is an arithmetic number, because the mean of its divisors is an integer number (52219).

2²⁰⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

207397 is a deficient number, since it is larger than the sum of its proper divisors (1479).

207397 is a wasteful number, since it uses less digits than its factorization.

207397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 207397 is about 455.4086077360. The cubic root of 207397 is about 59.1926100162.

The spelling of 207397 in words is "two hundred seven thousand, three hundred ninety-seven".