611045611 has 4 divisors (see below), whose sum is σ = 666595224. Its totient is φ = 555496000.

The previous prime is 611045599. The next prime is 611045627. The reversal of 611045611 is 116540116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 611045611 - 2¹⁷ = 610914539 is a prime.

It is a super-3 number, since 3×611045611³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611045311) 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, 27774790 + ... + 27774811.

It is an arithmetic number, because the mean of its divisors is an integer number (166648806).

Almost surely, 2^611045611 is an apocalyptic number.

611045611 is a deficient number, since it is larger than the sum of its proper divisors (55549613).

611045611 is a wasteful number, since it uses less digits than its factorization.

611045611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55549612.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 611045611 is about 24719.3367831744. The cubic root of 611045611 is about 848.5769087200.

Adding to 611045611 its reverse (116540116), we get a palindrome (727585727).

The spelling of 611045611 in words is "six hundred eleven million, forty-five thousand, six hundred eleven".