766719668 has 24 divisors (see below), whose sum is σ = 1576333920. Its totient is φ = 321700320.

The previous prime is 766719647. The next prime is 766719689. The reversal of 766719668 is 866917667.

It is an interprime number because it is at equal distance from previous prime (766719647) and next prime (766719689).

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 669638 + ... + 670781.

It is an arithmetic number, because the mean of its divisors is an integer number (65680580).

Almost surely, 2^766719668 is an apocalyptic number.

It is an amenable number.

766719668 is an abundant number, since it is smaller than the sum of its proper divisors (809614252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766719668 is a wasteful number, since it uses less digits than its factorization.

766719668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340447 (or 1340445 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 56.

The square root of 766719668 is about 27689.7032847952. The cubic root of 766719668 is about 915.2622171426.

The spelling of 766719668 in words is "seven hundred sixty-six million, seven hundred nineteen thousand, six hundred sixty-eight".