611613 has 6 divisors (see below), whose sum is σ = 883454. Its totient is φ = 407736.

The previous prime is 611603. The next prime is 611621. The reversal of 611613 is 316116.

611613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 363609 + 248004 = 603^2 + 498^2 .

It is not a de Polignac number, because 611613 - 2⁶ = 611549 is a prime.

It is a Duffinian number.

611613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33970 + ... + 33987.

2⁶¹¹⁶¹³ is an apocalyptic number.

It is an amenable number.

611613 is a deficient number, since it is larger than the sum of its proper divisors (271841).

611613 is a wasteful number, since it uses less digits than its factorization.

611613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67963 (or 67960 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 611613 is about 782.0569033005. The cubic root of 611613 is about 84.8839477366.

Adding to 611613 its reverse (316116), we get a palindrome (927729).

The spelling of 611613 in words is "six hundred eleven thousand, six hundred thirteen".