704631 has 8 divisors (see below), whose sum is σ = 943600. Its totient is φ = 467712.

The previous prime is 704617. The next prime is 704647. The reversal of 704631 is 136407.

704631 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 not a de Polignac number, because 704631 - 2⁶ = 704567 is a prime.

It is a super-2 number, since 2×704631² = 993009692322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 704598 and 704607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704681) 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, 711 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (117950).

2⁷⁰⁴⁶³¹ is an apocalyptic number.

704631 is a deficient number, since it is larger than the sum of its proper divisors (238969).

704631 is a wasteful number, since it uses less digits than its factorization.

704631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 704631 is about 839.4230161248. The cubic root of 704631 is about 88.9857739329.

The spelling of 704631 in words is "seven hundred four thousand, six hundred thirty-one".