766680189 has 16 divisors (see below), whose sum is σ = 1151145984. Its totient is φ = 449665200.

The previous prime is 766680181. The next prime is 766680247. The reversal of 766680189 is 981086667.

It is a happy number.

It is not a de Polignac number, because 766680189 - 2³ = 766680181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766680181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373699 + ... + 375744.

It is an arithmetic number, because the mean of its divisors is an integer number (71946624).

Almost surely, 2^766680189 is an apocalyptic number.

It is an amenable number.

766680189 is a deficient number, since it is larger than the sum of its proper divisors (384465795).

766680189 is a wasteful number, since it uses less digits than its factorization.

766680189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749488.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 766680189 is about 27688.9903932953. The cubic root of 766680189 is about 915.2465076820.

The spelling of 766680189 in words is "seven hundred sixty-six million, six hundred eighty thousand, one hundred eighty-nine".