704651 has 4 divisors (see below), whose sum is σ = 735312. Its totient is φ = 673992.

The previous prime is 704647. The next prime is 704657. The reversal of 704651 is 156407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156407 = 229 ⋅683.

It is not a de Polignac number, because 704651 - 2² = 704647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 30637 = 704651 / (7 + 0 + 4 + 6 + 5 + 1).

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (704657) 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, 15296 + ... + 15341.

It is an arithmetic number, because the mean of its divisors is an integer number (183828).

2⁷⁰⁴⁶⁵¹ is an apocalyptic number.

704651 is a deficient number, since it is larger than the sum of its proper divisors (30661).

704651 is a wasteful number, since it uses less digits than its factorization.

704651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30660.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 704651 is about 839.4349289850. The cubic root of 704651 is about 88.9866158386.

The spelling of 704651 in words is "seven hundred four thousand, six hundred fifty-one".