655807 has 2 divisors, whose sum is σ = 655808. Its totient is φ = 655806.

The previous prime is 655757. The next prime is 655847. The reversal of 655807 is 708556.

655807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655807 - 2¹⁹ = 131519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327903 + 327904.

It is an arithmetic number, because the mean of its divisors is an integer number (327904).

2⁶⁵⁵⁸⁰⁷ is an apocalyptic number.

655807 is a deficient number, since it is larger than the sum of its proper divisors (1).

655807 is an equidigital number, since it uses as much as digits as its factorization.

655807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 655807 is about 809.8191156055. The cubic root of 655807 is about 86.8811076913.

The spelling of 655807 in words is "six hundred fifty-five thousand, eight hundred seven".