805701993 has 4 divisors (see below), whose sum is σ = 1074269328. Its totient is φ = 537134660.

The previous prime is 805701989. The next prime is 805702019. The reversal of 805701993 is 399107508.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 805701993 - 2² = 805701989 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (805701943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134283663 + ... + 134283668.

It is an arithmetic number, because the mean of its divisors is an integer number (268567332).

Almost surely, 2^805701993 is an apocalyptic number.

It is an amenable number.

805701993 is a deficient number, since it is larger than the sum of its proper divisors (268567335).

805701993 is a wasteful number, since it uses less digits than its factorization.

805701993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268567334.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 805701993 is about 28384.8902234974. The cubic root of 805701993 is about 930.5180730050.

The spelling of 805701993 in words is "eight hundred five million, seven hundred one thousand, nine hundred ninety-three".