704781 has 40 divisors (see below), whose sum is σ = 1324224. Its totient is φ = 362880.

The previous prime is 704779. The next prime is 704783. The reversal of 704781 is 187407.

It is an interprime number because it is at equal distance from previous prime (704779) and next prime (704783).

It is not a de Polignac number, because 704781 - 2¹ = 704779 is a prime.

It is a super-2 number, since 2×704781² = 993432515922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 704781.

It is not an unprimeable number, because it can be changed into a prime (704783) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6181 + ... + 6293.

2⁷⁰⁴⁷⁸¹ is an apocalyptic number.

It is an amenable number.

704781 is a deficient number, since it is larger than the sum of its proper divisors (619443).

704781 is a wasteful number, since it uses less digits than its factorization.

704781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 704781 is about 839.5123584558. The cubic root of 704781 is about 88.9920878376.

It can be divided in two parts, 704 and 781, that added together give a triangular number (1485 = T₅₄).

The spelling of 704781 in words is "seven hundred four thousand, seven hundred eighty-one".