616205045 has 16 divisors (see below), whose sum is σ = 752606640. Its totient is φ = 484245504.

The previous prime is 616204997. The next prime is 616205047. The reversal of 616205045 is 540502616.

It can be written as a sum of positive squares in 8 ways, for example, as 154728721 + 461476324 = 12439^2 + 21482^2 .

It is a cyclic number.

It is not a de Polignac number, because 616205045 - 2¹⁰ = 616204021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 616204999 and 616205017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616205047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90521 + ... + 97089.

It is an arithmetic number, because the mean of its divisors is an integer number (47037915).

Almost surely, 2^616205045 is an apocalyptic number.

It is an amenable number.

616205045 is a deficient number, since it is larger than the sum of its proper divisors (136401595).

616205045 is a wasteful number, since it uses less digits than its factorization.

616205045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 616205045 is about 24823.4776975346. The cubic root of 616205045 is about 850.9585702579.

The spelling of 616205045 in words is "six hundred sixteen million, two hundred five thousand, forty-five".