766877066 has 4 divisors (see below), whose sum is σ = 1150315602. Its totient is φ = 383438532.

The previous prime is 766877057. The next prime is 766877071. The reversal of 766877066 is 660778667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660778667 = 2999 ⋅220333.

It can be written as a sum of positive squares in only one way, i.e., 475458025 + 291419041 = 21805^2 + 17071^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 766876999 and 766877017.

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, 191719265 + ... + 191719268.

Almost surely, 2^766877066 is an apocalyptic number.

766877066 is a deficient number, since it is larger than the sum of its proper divisors (383438536).

766877066 is a wasteful number, since it uses less digits than its factorization.

766877066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383438535.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The square root of 766877066 is about 27692.5453145788. The cubic root of 766877066 is about 915.3248435025.

The spelling of 766877066 in words is "seven hundred sixty-six million, eight hundred seventy-seven thousand, sixty-six".