658397 has 4 divisors (see below), whose sum is σ = 660156. Its totient is φ = 656640.

The previous prime is 658391. The next prime is 658403. The reversal of 658397 is 793856.

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

It is an interprime number because it is at equal distance from previous prime (658391) and next prime (658403).

It can be written as a sum of positive squares in 2 ways, for example, as 241081 + 417316 = 491^2 + 646^2 .

It is a cyclic number.

It is not a de Polignac number, because 658397 - 2¹² = 654301 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 658397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (658391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (165039).

2⁶⁵⁸³⁹⁷ is an apocalyptic number.

It is an amenable number.

658397 is a deficient number, since it is larger than the sum of its proper divisors (1759).

658397 is a wasteful number, since it uses less digits than its factorization.

658397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758.

The product of its digits is 45360, while the sum is 38.

The square root of 658397 is about 811.4166623875. The cubic root of 658397 is about 86.9953315855.

The spelling of 658397 in words is "six hundred fifty-eight thousand, three hundred ninety-seven".