766641198 has 32 divisors (see below), whose sum is σ = 1607060736. Its totient is φ = 243349568.

The previous prime is 766641193. The next prime is 766641199. The reversal of 766641198 is 891146667.

It is a happy 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, 19090 + ... + 43562.

It is an arithmetic number, because the mean of its divisors is an integer number (50220648).

Almost surely, 2^766641198 is an apocalyptic number.

766641198 is an abundant number, since it is smaller than the sum of its proper divisors (840419538).

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

766641198 is a wasteful number, since it uses less digits than its factorization.

766641198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24728.

The product of its digits is 435456, while the sum is 48.

The square root of 766641198 is about 27688.2862958328. The cubic root of 766641198 is about 915.2309918767.

The spelling of 766641198 in words is "seven hundred sixty-six million, six hundred forty-one thousand, one hundred ninety-eight".