766320678 has 12 divisors (see below), whose sum is σ = 1660361508. Its totient is φ = 255440220.

The previous prime is 766320677. The next prime is 766320683. The reversal of 766320678 is 876023667.

766320678 is a `hidden beast` number, since 7 + 6 + 632 + 0 + 6 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766320677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21286668 + ... + 21286703.

It is an arithmetic number, because the mean of its divisors is an integer number (138363459).

Almost surely, 2^766320678 is an apocalyptic number.

766320678 is an abundant number, since it is smaller than the sum of its proper divisors (894040830).

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

766320678 is a wasteful number, since it uses less digits than its factorization.

766320678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42573379 (or 42573376 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 766320678 is about 27682.4976835545. The cubic root of 766320678 is about 915.1034264527.

The spelling of 766320678 in words is "seven hundred sixty-six million, three hundred twenty thousand, six hundred seventy-eight".