5958661 has 4 divisors (see below), whose sum is σ = 5964300. Its totient is φ = 5953024.

The previous prime is 5958643. The next prime is 5958671. The reversal of 5958661 is 1668595.

5958661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1668595 = 5 ⋅333719.

It can be written as a sum of positive squares in 2 ways, for example, as 3132900 + 2825761 = 1770^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 5958661 - 2¹⁷ = 5827589 is a prime.

It is a super-3 number, since 3×5958661³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5958671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706 + ... + 3523.

It is an arithmetic number, because the mean of its divisors is an integer number (1491075).

Almost surely, 2^5958661 is an apocalyptic number.

It is an amenable number.

5958661 is a deficient number, since it is larger than the sum of its proper divisors (5639).

5958661 is a wasteful number, since it uses less digits than its factorization.

5958661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638.

The product of its digits is 64800, while the sum is 40.

The square root of 5958661 is about 2441.0368698567. The cubic root of 5958661 is about 181.2937752372.

The spelling of 5958661 in words is "five million, nine hundred fifty-eight thousand, six hundred sixty-one".