654679559 has 2 divisors, whose sum is σ = 654679560. Its totient is φ = 654679558.

The previous prime is 654679547. The next prime is 654679589. The reversal of 654679559 is 955976456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654679559 - 2²⁰ = 653630983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654679589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327339779 + 327339780.

It is an arithmetic number, because the mean of its divisors is an integer number (327339780).

Almost surely, 2^654679559 is an apocalyptic number.

654679559 is a deficient number, since it is larger than the sum of its proper divisors (1).

654679559 is an equidigital number, since it uses as much as digits as its factorization.

654679559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206000, while the sum is 56.

The square root of 654679559 is about 25586.7066853083. The cubic root of 654679559 is about 868.3129145507.

The spelling of 654679559 in words is "six hundred fifty-four million, six hundred seventy-nine thousand, five hundred fifty-nine".