611617 has 4 divisors (see below), whose sum is σ = 614980. Its totient is φ = 608256.

The previous prime is 611603. The next prime is 611621. The reversal of 611617 is 716116.

611617 = 23⁴ + 24⁴.

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 331776 + 279841 = 576^2 + 529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611617 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (611657) 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, 1392 + ... + 1777.

It is an arithmetic number, because the mean of its divisors is an integer number (153745).

2⁶¹¹⁶¹⁷ is an apocalyptic number.

It is an amenable number.

611617 is a deficient number, since it is larger than the sum of its proper divisors (3363).

611617 is a wasteful number, since it uses less digits than its factorization.

611617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362.

The product of its digits is 252, while the sum is 22.

The square root of 611617 is about 782.0594606550. The cubic root of 611617 is about 84.8841327855.

The spelling of 611617 in words is "six hundred eleven thousand, six hundred seventeen".