616911077 has 4 divisors (see below), whose sum is σ = 619471116. Its totient is φ = 614351040.

The previous prime is 616911073. The next prime is 616911089. The reversal of 616911077 is 770119616.

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 422754721 + 194156356 = 20561^2 + 13934^2 .

It is a cyclic number.

It is not a de Polignac number, because 616911077 - 2² = 616911073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 616911077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616911073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1279658 + ... + 1280139.

It is an arithmetic number, because the mean of its divisors is an integer number (154867779).

Almost surely, 2^616911077 is an apocalyptic number.

It is an amenable number.

616911077 is a deficient number, since it is larger than the sum of its proper divisors (2560039).

616911077 is a wasteful number, since it uses less digits than its factorization.

616911077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560038.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 616911077 is about 24837.6946796598. The cubic root of 616911077 is about 851.2834484080.

The spelling of 616911077 in words is "six hundred sixteen million, nine hundred eleven thousand, seventy-seven".