704407621 has 2 divisors, whose sum is σ = 704407622. Its totient is φ = 704407620.

The previous prime is 704407609. The next prime is 704407673. The reversal of 704407621 is 126704407.

704407621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 615784225 + 88623396 = 24815^2 + 9414^2 .

It is a cyclic number.

It is not a de Polignac number, because 704407621 - 2⁷ = 704407493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (704407721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352203810 + 352203811.

It is an arithmetic number, because the mean of its divisors is an integer number (352203811).

Almost surely, 2^704407621 is an apocalyptic number.

It is an amenable number.

704407621 is a deficient number, since it is larger than the sum of its proper divisors (1).

704407621 is an equidigital number, since it uses as much as digits as its factorization.

704407621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 704407621 is about 26540.6786085058. The cubic root of 704407621 is about 889.7636964702.

The spelling of 704407621 in words is "seven hundred four million, four hundred seven thousand, six hundred twenty-one".