654360643 has 2 divisors, whose sum is σ = 654360644. Its totient is φ = 654360642.

The previous prime is 654360607. The next prime is 654360647. The reversal of 654360643 is 346063456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654360643 - 2¹³ = 654352451 is a prime.

It is a super-2 number, since 2×654360643² = 856375702214746898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (654360647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327180321 + 327180322.

It is an arithmetic number, because the mean of its divisors is an integer number (327180322).

Almost surely, 2^654360643 is an apocalyptic number.

654360643 is a deficient number, since it is larger than the sum of its proper divisors (1).

654360643 is an equidigital number, since it uses as much as digits as its factorization.

654360643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 654360643 is about 25580.4738619127. The cubic root of 654360643 is about 868.1718970329.

The spelling of 654360643 in words is "six hundred fifty-four million, three hundred sixty thousand, six hundred forty-three".