658405541 has 2 divisors, whose sum is σ = 658405542. Its totient is φ = 658405540.

The previous prime is 658405471. The next prime is 658405543. The reversal of 658405541 is 145504856.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512841316 + 145564225 = 22646^2 + 12065^2 .

It is a cyclic number.

It is not a de Polignac number, because 658405541 - 2¹⁰ = 658404517 is a prime.

Together with 658405543, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 658405495 and 658405504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (658405543) 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, 329202770 + 329202771.

It is an arithmetic number, because the mean of its divisors is an integer number (329202771).

Almost surely, 2^658405541 is an apocalyptic number.

It is an amenable number.

658405541 is a deficient number, since it is larger than the sum of its proper divisors (1).

658405541 is an equidigital number, since it uses as much as digits as its factorization.

658405541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 658405541 is about 25659.4142762457. The cubic root of 658405541 is about 869.9570776376.

The spelling of 658405541 in words is "six hundred fifty-eight million, four hundred five thousand, five hundred forty-one".