655897 has 4 divisors (see below), whose sum is σ = 715536. Its totient is φ = 596260.

The previous prime is 655883. The next prime is 655901. The reversal of 655897 is 798556.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655807) 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, 29803 + ... + 29824.

It is an arithmetic number, because the mean of its divisors is an integer number (178884).

2⁶⁵⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

655897 is a deficient number, since it is larger than the sum of its proper divisors (59639).

655897 is a wasteful number, since it uses less digits than its factorization.

655897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59638.

The product of its digits is 75600, while the sum is 40.

The square root of 655897 is about 809.8746816638. The cubic root of 655897 is about 86.8850819002.

The spelling of 655897 in words is "six hundred fifty-five thousand, eight hundred ninety-seven".