797091866 has 16 divisors (see below), whose sum is σ = 1213755840. Its totient is φ = 392518560.

The previous prime is 797091863. The next prime is 797091881. The reversal of 797091866 is 668190797.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (797091863) 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 7 ways as a sum of consecutive naturals, for example, 166190 + ... + 170918.

It is an arithmetic number, because the mean of its divisors is an integer number (75859740).

Almost surely, 2^797091866 is an apocalyptic number.

797091866 is a deficient number, since it is larger than the sum of its proper divisors (416663974).

797091866 is a wasteful number, since it uses less digits than its factorization.

797091866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5989.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 797091866 is about 28232.8154104404. The cubic root of 797091866 is about 927.1915374157.

The spelling of 797091866 in words is "seven hundred ninety-seven million, ninety-one thousand, eight hundred sixty-six".