657097 has 4 divisors (see below), whose sum is σ = 750976. Its totient is φ = 563220.

The previous prime is 657091. The next prime is 657113. The reversal of 657097 is 790756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 657097 - 2³ = 657089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (657091) 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, 46929 + ... + 46942.

It is an arithmetic number, because the mean of its divisors is an integer number (187744).

2⁶⁵⁷⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

657097 is a deficient number, since it is larger than the sum of its proper divisors (93879).

657097 is an equidigital number, since it uses as much as digits as its factorization.

657097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93878.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 657097 is about 810.6151984758. The cubic root of 657097 is about 86.9380366468.

The spelling of 657097 in words is "six hundred fifty-seven thousand, ninety-seven".