611170681 has 4 divisors (see below), whose sum is σ = 666731664. Its totient is φ = 555609700.

The previous prime is 611170667. The next prime is 611170691. The reversal of 611170681 is 186071116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611170681 is a prime.

It is a super-2 number, since 2×611170681² = 747059202628007522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611170601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27780475 + ... + 27780496.

It is an arithmetic number, because the mean of its divisors is an integer number (166682916).

Almost surely, 2^611170681 is an apocalyptic number.

It is an amenable number.

611170681 is a deficient number, since it is larger than the sum of its proper divisors (55560983).

611170681 is a wasteful number, since it uses less digits than its factorization.

611170681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55560982.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 611170681 is about 24721.8664546187. The cubic root of 611170681 is about 848.6348008925.

The spelling of 611170681 in words is "six hundred eleven million, one hundred seventy thousand, six hundred eighty-one".