654555859 has 2 divisors, whose sum is σ = 654555860. Its totient is φ = 654555858.

The previous prime is 654555799. The next prime is 654555899. The reversal of 654555859 is 958555456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654555859 - 2²⁵ = 621001427 is a prime.

It is not a weakly prime, because it can be changed into another prime (654555899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327277929 + 327277930.

It is an arithmetic number, because the mean of its divisors is an integer number (327277930).

Almost surely, 2^654555859 is an apocalyptic number.

654555859 is a deficient number, since it is larger than the sum of its proper divisors (1).

654555859 is an equidigital number, since it uses as much as digits as its factorization.

654555859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400000, while the sum is 52.

The square root of 654555859 is about 25584.2893002718. The cubic root of 654555859 is about 868.2582226170.

The spelling of 654555859 in words is "six hundred fifty-four million, five hundred fifty-five thousand, eight hundred fifty-nine".