654759971 has 2 divisors, whose sum is σ = 654759972. Its totient is φ = 654759970.

The previous prime is 654759967. The next prime is 654759997. The reversal of 654759971 is 179957456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654759971 - 2² = 654759967 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (654759901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327379985 + 327379986.

It is an arithmetic number, because the mean of its divisors is an integer number (327379986).

Almost surely, 2^654759971 is an apocalyptic number.

654759971 is a deficient number, since it is larger than the sum of its proper divisors (1).

654759971 is an equidigital number, since it uses as much as digits as its factorization.

654759971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2381400, while the sum is 53.

The square root of 654759971 is about 25588.2779998967. The cubic root of 654759971 is about 868.3484637079.

The spelling of 654759971 in words is "six hundred fifty-four million, seven hundred fifty-nine thousand, nine hundred seventy-one".