616541 has 4 divisors (see below), whose sum is σ = 618492. Its totient is φ = 614592.

The previous prime is 616537. The next prime is 616547. The reversal of 616541 is 145616.

616541 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 395641 = 470^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 616541 - 2² = 616537 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (154623).

2⁶¹⁶⁵⁴¹ is an apocalyptic number.

It is an amenable number.

616541 is a deficient number, since it is larger than the sum of its proper divisors (1951).

616541 is a wasteful number, since it uses less digits than its factorization.

616541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950.

The product of its digits is 720, while the sum is 23.

The square root of 616541 is about 785.2012480887. The cubic root of 616541 is about 85.1113189704. Note that the first 3 decimals are identical.

The spelling of 616541 in words is "six hundred sixteen thousand, five hundred forty-one".