616245541 has 4 divisors (see below), whose sum is σ = 622347084. Its totient is φ = 610144000.

The previous prime is 616245533. The next prime is 616245551. The reversal of 616245541 is 145542616.

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 319372641 + 296872900 = 17871^2 + 17230^2 .

It is a cyclic number.

It is not a de Polignac number, because 616245541 - 2³ = 616245533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616245497 and 616245506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616245521) 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, 3050620 + ... + 3050821.

It is an arithmetic number, because the mean of its divisors is an integer number (155586771).

Almost surely, 2^616245541 is an apocalyptic number.

It is an amenable number.

616245541 is a deficient number, since it is larger than the sum of its proper divisors (6101543).

616245541 is a wasteful number, since it uses less digits than its factorization.

616245541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101542.

The product of its digits is 28800, while the sum is 34.

The square root of 616245541 is about 24824.2933635582. The cubic root of 616245541 is about 850.9772110570.

The spelling of 616245541 in words is "six hundred sixteen million, two hundred forty-five thousand, five hundred forty-one".