611772077 has 4 divisors (see below), whose sum is σ = 699168096. Its totient is φ = 524376060.

The previous prime is 611772067. The next prime is 611772079. The reversal of 611772077 is 770277116.

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 not a de Polignac number, because 611772077 - 2²⁰ = 610723501 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 611772077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611772079) 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, 43697999 + ... + 43698012.

It is an arithmetic number, because the mean of its divisors is an integer number (174792024).

Almost surely, 2^611772077 is an apocalyptic number.

It is an amenable number.

611772077 is a deficient number, since it is larger than the sum of its proper divisors (87396019).

611772077 is an equidigital number, since it uses as much as digits as its factorization.

611772077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87396018.

The product of its (nonzero) digits is 28812, while the sum is 38.

The square root of 611772077 is about 24734.0267041175. The cubic root of 611772077 is about 848.9130637308.

The spelling of 611772077 in words is "six hundred eleven million, seven hundred seventy-two thousand, seventy-seven".