766027720668 has 48 divisors (see below), whose sum is σ = 2042787527424. Its totient is φ = 218860033920.

The previous prime is 766027720657. The next prime is 766027720723. The reversal of 766027720668 is 866027720667.

It is a super-2 number, since 2×766027720668² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5106088 + ... + 5253968.

It is an arithmetic number, because the mean of its divisors is an integer number (42558073488).

Almost surely, 2^766027720668 is an apocalyptic number.

It is an amenable number.

766027720668 is an abundant number, since it is smaller than the sum of its proper divisors (1276759806756).

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

766027720668 is a wasteful number, since it uses less digits than its factorization.

766027720668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209562 (or 209560 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 57.

Subtracting 766027720668 from its reverse (866027720667), we obtain a palindrome (99999999999).

The spelling of 766027720668 in words is "seven hundred sixty-six billion, twenty-seven million, seven hundred twenty thousand, six hundred sixty-eight".