684701 has 4 divisors (see below), whose sum is σ = 686400. Its totient is φ = 683004.

The previous prime is 684683. The next prime is 684713. The reversal of 684701 is 107486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 684701 - 2⁶ = 684637 is a prime.

It is a Duffinian number.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140 + ... + 1178.

It is an arithmetic number, because the mean of its divisors is an integer number (171600).

2⁶⁸⁴⁷⁰¹ is an apocalyptic number.

It is an amenable number.

684701 is a deficient number, since it is larger than the sum of its proper divisors (1699).

684701 is a wasteful number, since it uses less digits than its factorization.

684701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 684701 is about 827.4666156408. The cubic root of 684701 is about 88.1387703780.

The spelling of 684701 in words is "six hundred eighty-four thousand, seven hundred one".