611621113 has 8 divisors (see below), whose sum is σ = 623558088. Its totient is φ = 599698944.

The previous prime is 611621111. The next prime is 611621141. The reversal of 611621113 is 311126116.

611621113 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 4 ways, for example, as 454670329 + 156950784 = 21323^2 + 12528^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611621113 - 2¹ = 611621111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611621111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117931 + ... + 123007.

It is an arithmetic number, because the mean of its divisors is an integer number (77944761).

Almost surely, 2^611621113 is an apocalyptic number.

It is an amenable number.

611621113 is a deficient number, since it is larger than the sum of its proper divisors (11936975).

611621113 is a wasteful number, since it uses less digits than its factorization.

611621113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7403.

The product of its digits is 216, while the sum is 22.

The square root of 611621113 is about 24730.9747684963. The cubic root of 611621113 is about 848.8432306130.

Adding to 611621113 its reverse (311126116), we get a palindrome (922747229).

The spelling of 611621113 in words is "six hundred eleven million, six hundred twenty-one thousand, one hundred thirteen".