766668402 has 24 divisors (see below), whose sum is σ = 1722638736. Its totient is φ = 255555972.

The previous prime is 766668401. The next prime is 766668433. The reversal of 766668402 is 204866667.

It is not an unprimeable number, because it can be changed into a prime (766668401) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 788268 + ... + 789239.

It is an arithmetic number, because the mean of its divisors is an integer number (71776614).

Almost surely, 2^766668402 is an apocalyptic number.

766668402 is an abundant number, since it is smaller than the sum of its proper divisors (955970334).

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

766668402 is a wasteful number, since it uses less digits than its factorization.

766668402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577524 (or 1577512 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 766668402 is about 27688.7775461467. Note that the first 3 decimals coincide. The cubic root of 766668402 is about 915.2418173013.

The spelling of 766668402 in words is "seven hundred sixty-six million, six hundred sixty-eight thousand, four hundred two".