705081993 has 32 divisors (see below), whose sum is σ = 1174824960. Its totient is φ = 365420160.

The previous prime is 705081991. The next prime is 705082003. The reversal of 705081993 is 399180507.

It is a happy number.

It is not a de Polignac number, because 705081993 - 2¹ = 705081991 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (705081991) 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, 102228 + ... + 108906.

It is an arithmetic number, because the mean of its divisors is an integer number (36713280).

Almost surely, 2^705081993 is an apocalyptic number.

It is an amenable number.

705081993 is a deficient number, since it is larger than the sum of its proper divisors (469742967).

705081993 is a wasteful number, since it uses less digits than its factorization.

705081993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157.

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

The square root of 705081993 is about 26553.3800673285. The cubic root of 705081993 is about 890.0475474324.

The spelling of 705081993 in words is "seven hundred five million, eighty-one thousand, nine hundred ninety-three".