766641197 has 16 divisors (see below), whose sum is σ = 936385920. Its totient is φ = 612676608.

The previous prime is 766641193. The next prime is 766641199. The reversal of 766641197 is 791146667.

It is a cyclic number.

It is not a de Polignac number, because 766641197 - 2² = 766641193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766641193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17372 + ... + 42837.

It is an arithmetic number, because the mean of its divisors is an integer number (58524120).

Almost surely, 2^766641197 is an apocalyptic number.

It is an amenable number.

766641197 is a deficient number, since it is larger than the sum of its proper divisors (169744723).

766641197 is a wasteful number, since it uses less digits than its factorization.

766641197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60340.

The product of its digits is 381024, while the sum is 47.

The square root of 766641197 is about 27688.2862777746. The cubic root of 766641197 is about 915.2309914788.

The spelling of 766641197 in words is "seven hundred sixty-six million, six hundred forty-one thousand, one hundred ninety-seven".