654679541 has 2 divisors, whose sum is σ = 654679542. Its totient is φ = 654679540.

The previous prime is 654679507. The next prime is 654679547. The reversal of 654679541 is 145976456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612364516 + 42315025 = 24746^2 + 6505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654679541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654679547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327339770 + 327339771.

It is an arithmetic number, because the mean of its divisors is an integer number (327339771).

Almost surely, 2^654679541 is an apocalyptic number.

It is an amenable number.

654679541 is a deficient number, since it is larger than the sum of its proper divisors (1).

654679541 is an equidigital number, since it uses as much as digits as its factorization.

654679541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The square root of 654679541 is about 25586.7063335631. The cubic root of 654679541 is about 868.3129065928.

The spelling of 654679541 in words is "six hundred fifty-four million, six hundred seventy-nine thousand, five hundred forty-one".