654310691 has 2 divisors, whose sum is σ = 654310692. Its totient is φ = 654310690.

The previous prime is 654310621. The next prime is 654310697. The reversal of 654310691 is 196013456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654310691 - 2¹⁴ = 654294307 is a prime.

It is not a weakly prime, because it can be changed into another prime (654310697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327155345 + 327155346.

It is an arithmetic number, because the mean of its divisors is an integer number (327155346).

Almost surely, 2^654310691 is an apocalyptic number.

654310691 is a deficient number, since it is larger than the sum of its proper divisors (1).

654310691 is an equidigital number, since it uses as much as digits as its factorization.

654310691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 654310691 is about 25579.4974735627. The cubic root of 654310691 is about 868.1498052264.

The spelling of 654310691 in words is "six hundred fifty-four million, three hundred ten thousand, six hundred ninety-one".