704971321 has 6 divisors (see below), whose sum is σ = 736955450. Its totient is φ = 674319888.

The previous prime is 704971313. The next prime is 704971331. The reversal of 704971321 is 123179407.

It can be written as a sum of positive squares in only one way, i.e., 534303225 + 170668096 = 23115^2 + 13064^2 .

It is not a de Polignac number, because 704971321 - 2³ = 704971313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (704971331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665796 + ... + 666853.

Almost surely, 2^704971321 is an apocalyptic number.

It is an amenable number.

704971321 is a deficient number, since it is larger than the sum of its proper divisors (31984129).

704971321 is a wasteful number, since it uses less digits than its factorization.

704971321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332695 (or 1332672 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 704971321 is about 26551.2960323974. The cubic root of 704971321 is about 890.0009767275. Note that the first 3 decimals are identical.

The spelling of 704971321 in words is "seven hundred four million, nine hundred seventy-one thousand, three hundred twenty-one".