766220011 has 4 divisors (see below), whose sum is σ = 806547400. Its totient is φ = 725892624.

The previous prime is 766219997. The next prime is 766220027. The reversal of 766220011 is 110022667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110022667 = 5119 ⋅21493.

It is a cyclic number.

It is not a de Polignac number, because 766220011 - 2¹⁵ = 766187243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766220041) 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 3 ways as a sum of consecutive naturals, for example, 20163666 + ... + 20163703.

It is an arithmetic number, because the mean of its divisors is an integer number (201636850).

Almost surely, 2^766220011 is an apocalyptic number.

766220011 is a deficient number, since it is larger than the sum of its proper divisors (40327389).

766220011 is a wasteful number, since it uses less digits than its factorization.

766220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40327388.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 766220011 is about 27680.6793811135. The cubic root of 766220011 is about 915.0633541290.

Adding to 766220011 its reverse (110022667), we get a palindrome (876242678).

The spelling of 766220011 in words is "seven hundred sixty-six million, two hundred twenty thousand, eleven".