797926665 has 32 divisors (see below), whose sum is σ = 1300666752. Its totient is φ = 417600000.

The previous prime is 797926663. The next prime is 797926681. The reversal of 797926665 is 566629797.

It is a happy number.

It is not a de Polignac number, because 797926665 - 2¹ = 797926663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (797926663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549190 + ... + 550640.

It is an arithmetic number, because the mean of its divisors is an integer number (40645836).

Almost surely, 2^797926665 is an apocalyptic number.

It is an amenable number.

797926665 is a deficient number, since it is larger than the sum of its proper divisors (502740087).

797926665 is a wasteful number, since it uses less digits than its factorization.

797926665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121.

The product of its digits is 8573040, while the sum is 57.

The square root of 797926665 is about 28247.5957383987. The cubic root of 797926665 is about 927.5151088662.

The spelling of 797926665 in words is "seven hundred ninety-seven million, nine hundred twenty-six thousand, six hundred sixty-five".