655547 has 2 divisors, whose sum is σ = 655548. Its totient is φ = 655546.

The previous prime is 655541. The next prime is 655559. The reversal of 655547 is 745556.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655547 - 2⁴ = 655531 is a prime.

It is not a weakly prime, because it can be changed into another prime (655541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327773 + 327774.

It is an arithmetic number, because the mean of its divisors is an integer number (327774).

2⁶⁵⁵⁵⁴⁷ is an apocalyptic number.

655547 is a deficient number, since it is larger than the sum of its proper divisors (1).

655547 is an equidigital number, since it uses as much as digits as its factorization.

655547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 655547 is about 809.6585700158. The cubic root of 655547 is about 86.8696246006.

Subtracting 655547 from its reverse (745556), we obtain a palindrome (90009).

The spelling of 655547 in words is "six hundred fifty-five thousand, five hundred forty-seven".