654757897 has 2 divisors, whose sum is σ = 654757898. Its totient is φ = 654757896.

The previous prime is 654757843. The next prime is 654757921. The reversal of 654757897 is 798757456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479566201 + 175191696 = 21899^2 + 13236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654757897 is a prime.

It is not a weakly prime, because it can be changed into another prime (654757837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327378948 + 327378949.

It is an arithmetic number, because the mean of its divisors is an integer number (327378949).

Almost surely, 2^654757897 is an apocalyptic number.

It is an amenable number.

654757897 is a deficient number, since it is larger than the sum of its proper divisors (1).

654757897 is an equidigital number, since it uses as much as digits as its factorization.

654757897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14817600, while the sum is 58.

The square root of 654757897 is about 25588.2374734955. The cubic root of 654757897 is about 868.3475468545.

The spelling of 654757897 in words is "six hundred fifty-four million, seven hundred fifty-seven thousand, eight hundred ninety-seven".