613111061 has 4 divisors (see below), whose sum is σ = 623162124. Its totient is φ = 603060000.

The previous prime is 613111043. The next prime is 613111063. The reversal of 613111061 is 160111316.

It is a happy number.

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 62504836 + 550606225 = 7906^2 + 23465^2 .

It is a cyclic number.

It is not a de Polignac number, because 613111061 - 2¹⁰ = 613110037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613111063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5025440 + ... + 5025561.

It is an arithmetic number, because the mean of its divisors is an integer number (155790531).

Almost surely, 2^613111061 is an apocalyptic number.

613111061 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

613111061 is a deficient number, since it is larger than the sum of its proper divisors (10051063).

613111061 is a wasteful number, since it uses less digits than its factorization.

613111061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051062.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 613111061 is about 24761.0795604715. The cubic root of 613111061 is about 849.5319503912.

Adding to 613111061 its reverse (160111316), we get a palindrome (773222377).

The spelling of 613111061 in words is "six hundred thirteen million, one hundred eleven thousand, sixty-one".