766647341056 has 39 divisors (see below), whose sum is σ = 1533219581613. Its totient is φ = 383295651840.

The previous prime is 766647341051. The next prime is 766647341069. The reversal of 766647341056 is 650143746667.

The square root of 766647341056 is 875584.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 717043142656 + 49604198400 = 846784^2 + 222720^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 766647340988 and 766647341006.

It is not an unprimeable number, because it can be changed into a prime (766647341051) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 56030536 + ... + 56044216.

Almost surely, 2^766647341056 is an apocalyptic number.

766647341056 is the 875584-th square number.

It is an amenable number.

766647341056 is a deficient number, since it is larger than the sum of its proper divisors (766572240557).

766647341056 is an frugal number, since it uses more digits than its factorization.

766647341056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27386 (or 13683 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 766647341056 in words is "seven hundred sixty-six billion, six hundred forty-seven million, three hundred forty-one thousand, fifty-six".