705493921 has 8 divisors (see below), whose sum is σ = 810136800. Its totient is φ = 607602240.

The previous prime is 705493909. The next prime is 705493949. The reversal of 705493921 is 129394507.

705493921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 705493921 - 2⁹ = 705493409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (705491921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1687576 + ... + 1687993.

It is an arithmetic number, because the mean of its divisors is an integer number (101267100).

Almost surely, 2^705493921 is an apocalyptic number.

It is an amenable number.

705493921 is a deficient number, since it is larger than the sum of its proper divisors (104642879).

705493921 is a wasteful number, since it uses less digits than its factorization.

705493921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375599.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 705493921 is about 26561.1355367198. The cubic root of 705493921 is about 890.2208436511.

The spelling of 705493921 in words is "seven hundred five million, four hundred ninety-three thousand, nine hundred twenty-one".