766223740636 has 12 divisors (see below), whose sum is σ = 1344545204128. Its totient is φ = 382067968032.

The previous prime is 766223740619. The next prime is 766223740649. The reversal of 766223740636 is 636047322667.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260973921 + ... + 260976856.

Almost surely, 2^766223740636 is an apocalyptic number.

It is an amenable number.

766223740636 is a deficient number, since it is larger than the sum of its proper divisors (578321463492).

766223740636 is a wasteful number, since it uses less digits than its factorization.

766223740636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521951148 (or 521951146 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 52.

The spelling of 766223740636 in words is "seven hundred sixty-six billion, two hundred twenty-three million, seven hundred forty thousand, six hundred thirty-six".