655855679 has 2 divisors, whose sum is σ = 655855680. Its totient is φ = 655855678.

The previous prime is 655855663. The next prime is 655855691. The reversal of 655855679 is 976558556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655855679 - 2⁴ = 655855663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655855279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327927839 + 327927840.

It is an arithmetic number, because the mean of its divisors is an integer number (327927840).

Almost surely, 2^655855679 is an apocalyptic number.

655855679 is a deficient number, since it is larger than the sum of its proper divisors (1).

655855679 is an equidigital number, since it uses as much as digits as its factorization.

655855679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340000, while the sum is 56.

The square root of 655855679 is about 25609.6794005704. The cubic root of 655855679 is about 868.8325729771.

The spelling of 655855679 in words is "six hundred fifty-five million, eight hundred fifty-five thousand, six hundred seventy-nine".