5658649 has 2 divisors, whose sum is σ = 5658650. Its totient is φ = 5658648.

The previous prime is 5658643. The next prime is 5658673. The reversal of 5658649 is 9468565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5322249 + 336400 = 2307^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 5658649 - 2⁹ = 5658137 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5658643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2829324 + 2829325.

It is an arithmetic number, because the mean of its divisors is an integer number (2829325).

Almost surely, 2^5658649 is an apocalyptic number.

It is an amenable number.

5658649 is a deficient number, since it is larger than the sum of its proper divisors (1).

5658649 is an equidigital number, since it uses as much as digits as its factorization.

5658649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 5658649 is about 2378.7914999007. The cubic root of 5658649 is about 178.1985853351.

The spelling of 5658649 in words is "five million, six hundred fifty-eight thousand, six hundred forty-nine".