75677761 has 4 divisors (see below), whose sum is σ = 80129412. Its totient is φ = 71226112.

The previous prime is 75677753. The next prime is 75677827. The reversal of 75677761 is 16777657.

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 46991025 + 28686736 = 6855^2 + 5356^2 .

It is a cyclic number.

It is not a de Polignac number, because 75677761 - 2³ = 75677753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75677711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225800 + ... + 2225833.

It is an arithmetic number, because the mean of its divisors is an integer number (20032353).

Almost surely, 2^75677761 is an apocalyptic number.

It is an amenable number.

75677761 is a deficient number, since it is larger than the sum of its proper divisors (4451651).

75677761 is a wasteful number, since it uses less digits than its factorization.

75677761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451650.

The product of its digits is 432180, while the sum is 46.

The square root of 75677761 is about 8699.2965807587. The cubic root of 75677761 is about 422.9828491128.

The spelling of 75677761 in words is "seventy-five million, six hundred seventy-seven thousand, seven hundred sixty-one".