704291921 has 4 divisors (see below), whose sum is σ = 704827200. Its totient is φ = 703756644.

The previous prime is 704291899. The next prime is 704291923. The reversal of 704291921 is 129192407.

704291921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 704291921 - 2⁶ = 704291857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (704291923) 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, 265661 + ... + 268298.

It is an arithmetic number, because the mean of its divisors is an integer number (176206800).

Almost surely, 2^704291921 is an apocalyptic number.

It is an amenable number.

704291921 is a deficient number, since it is larger than the sum of its proper divisors (535279).

704291921 is a wasteful number, since it uses less digits than its factorization.

704291921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535278.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 704291921 is about 26538.4988460161. The cubic root of 704291921 is about 889.7149787990.

The spelling of 704291921 in words is "seven hundred four million, two hundred ninety-one thousand, nine hundred twenty-one".