611698061 has 4 divisors (see below), whose sum is σ = 658751772. Its totient is φ = 564644352.

The previous prime is 611698049. The next prime is 611698093. The reversal of 611698061 is 160896116.

611698061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 268337161 + 343360900 = 16381^2 + 18530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611698061 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611698001) 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, 23526836 + ... + 23526861.

It is an arithmetic number, because the mean of its divisors is an integer number (164687943).

Almost surely, 2^611698061 is an apocalyptic number.

It is an amenable number.

611698061 is a deficient number, since it is larger than the sum of its proper divisors (47053711).

611698061 is a wasteful number, since it uses less digits than its factorization.

611698061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47053710.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 611698061 is about 24732.5304204806. The cubic root of 611698061 is about 848.8788267517.

The spelling of 611698061 in words is "six hundred eleven million, six hundred ninety-eight thousand, sixty-one".