771041066 has 4 divisors (see below), whose sum is σ = 1156561602. Its totient is φ = 385520532.

The previous prime is 771041059. The next prime is 771041081. The reversal of 771041066 is 660140177.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 642876025 + 128165041 = 25355^2 + 11321^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 192760265 + ... + 192760268.

Almost surely, 2^771041066 is an apocalyptic number.

771041066 is a deficient number, since it is larger than the sum of its proper divisors (385520536).

771041066 is a wasteful number, since it uses less digits than its factorization.

771041066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385520535.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 771041066 is about 27767.6262219153. The cubic root of 771041066 is about 916.9785353091.

The spelling of 771041066 in words is "seven hundred seventy-one million, forty-one thousand, sixty-six".