654606857 has 2 divisors, whose sum is σ = 654606858. Its totient is φ = 654606856.

The previous prime is 654606839. The next prime is 654606889. The reversal of 654606857 is 758606456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328479376 + 326127481 = 18124^2 + 18059^2 .

It is a cyclic number.

It is not a de Polignac number, because 654606857 - 2²⁴ = 637829641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (654600857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327303428 + 327303429.

It is an arithmetic number, because the mean of its divisors is an integer number (327303429).

Almost surely, 2^654606857 is an apocalyptic number.

It is an amenable number.

654606857 is a deficient number, since it is larger than the sum of its proper divisors (1).

654606857 is an equidigital number, since it uses as much as digits as its factorization.

654606857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The square root of 654606857 is about 25585.2859472002. The cubic root of 654606857 is about 868.2807713841.

The spelling of 654606857 in words is "six hundred fifty-four million, six hundred six thousand, eight hundred fifty-seven".