766223740634 has 16 divisors (see below), whose sum is σ = 1253861310816. Its totient is φ = 348272228400.

The previous prime is 766223740619. The next prime is 766223740649. The reversal of 766223740634 is 436047322667.

It is an interprime number because it is at equal distance from previous prime (766223740619) and next prime (766223740649).

It is a super-2 number, since 2×766223740634² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149669 + ... + 1246935.

It is an arithmetic number, because the mean of its divisors is an integer number (78366331926).

Almost surely, 2^766223740634 is an apocalyptic number.

766223740634 is a deficient number, since it is larger than the sum of its proper divisors (487637570182).

766223740634 is a wasteful number, since it uses less digits than its factorization.

766223740634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129021.

The product of its (nonzero) digits is 6096384, while the sum is 50.

The spelling of 766223740634 in words is "seven hundred sixty-six billion, two hundred twenty-three million, seven hundred forty thousand, six hundred thirty-four".