775775870 has 16 divisors (see below), whose sum is σ = 1396755360. Its totient is φ = 310230624.

The previous prime is 775775863. The next prime is 775775879. The reversal of 775775870 is 78577577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775775879) 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 7 ways as a sum of consecutive naturals, for example, 45716 + ... + 60344.

It is an arithmetic number, because the mean of its divisors is an integer number (87297210).

Almost surely, 2^775775870 is an apocalyptic number.

775775870 is a deficient number, since it is larger than the sum of its proper divisors (620979490).

775775870 is a wasteful number, since it uses less digits than its factorization.

775775870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19939.

The product of its (nonzero) digits is 3361400, while the sum is 53.

The square root of 775775870 is about 27852.7533647932. The cubic root of 775775870 is about 918.8516982462.

The spelling of 775775870 in words is "seven hundred seventy-five million, seven hundred seventy-five thousand, eight hundred seventy".