681370 has 16 divisors (see below), whose sum is σ = 1247688. Its totient is φ = 267840.

The previous prime is 681367. The next prime is 681371. The reversal of 681370 is 73186.

681370 is nontrivially palindromic in base 4.

681370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 167281 + 514089 = 409^2 + 717^2 .

It is not an unprimeable number, because it can be changed into a prime (681371) 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, 52 + ... + 1168.

2⁶⁸¹³⁷⁰ is an apocalyptic number.

681370 is a deficient number, since it is larger than the sum of its proper divisors (566318).

681370 is a wasteful number, since it uses less digits than its factorization.

681370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 681370 is about 825.4513916640. The cubic root of 681370 is about 87.9956092851.

The spelling of 681370 in words is "six hundred eighty-one thousand, three hundred seventy".