611316691 has 4 divisors (see below), whose sum is σ = 611492112. Its totient is φ = 611141272.

The previous prime is 611316661. The next prime is 611316721. The reversal of 611316691 is 196613116.

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

It is an interprime number because it is at equal distance from previous prime (611316661) and next prime (611316721).

It is a cyclic number.

It is not a de Polignac number, because 611316691 - 2⁹ = 611316179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611316611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82375 + ... + 89488.

It is an arithmetic number, because the mean of its divisors is an integer number (152873028).

Almost surely, 2^611316691 is an apocalyptic number.

611316691 is a deficient number, since it is larger than the sum of its proper divisors (175421).

611316691 is a wasteful number, since it uses less digits than its factorization.

611316691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175420.

The product of its digits is 5832, while the sum is 34.

The square root of 611316691 is about 24724.8193319992. The cubic root of 611316691 is about 848.7023757424.

The spelling of 611316691 in words is "six hundred eleven million, three hundred sixteen thousand, six hundred ninety-one".