704023921 has 4 divisors (see below), whose sum is σ = 704214000. Its totient is φ = 703833844.

The previous prime is 704023913. The next prime is 704023927. The reversal of 704023921 is 129320407.

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 704023921 - 2³ = 704023913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 704023921.

It is not an unprimeable number, because it can be changed into a prime (704023927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89371 + ... + 96928.

It is an arithmetic number, because the mean of its divisors is an integer number (176053500).

Almost surely, 2^704023921 is an apocalyptic number.

It is an amenable number.

704023921 is a deficient number, since it is larger than the sum of its proper divisors (190079).

704023921 is a wasteful number, since it uses less digits than its factorization.

704023921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190078.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 704023921 is about 26533.4490973187. The cubic root of 704023921 is about 889.6021118386.

The spelling of 704023921 in words is "seven hundred four million, twenty-three thousand, nine hundred twenty-one".