766506646 has 8 divisors (see below), whose sum is σ = 1149892920. Its totient is φ = 383209008.

The previous prime is 766506613. The next prime is 766506647. The reversal of 766506646 is 646605667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 766506596 and 766506605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766506647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7290 + ... + 39826.

It is an arithmetic number, because the mean of its divisors is an integer number (143736615).

Almost surely, 2^766506646 is an apocalyptic number.

766506646 is a deficient number, since it is larger than the sum of its proper divisors (383386274).

766506646 is a wasteful number, since it uses less digits than its factorization.

766506646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44318.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The square root of 766506646 is about 27685.8564252580. The cubic root of 766506646 is about 915.1774451564.

The spelling of 766506646 in words is "seven hundred sixty-six million, five hundred six thousand, six hundred forty-six".