681053 has 4 divisors (see below), whose sum is σ = 710688. Its totient is φ = 651420.

The previous prime is 681049. The next prime is 681061. The reversal of 681053 is 350186.

681053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 681053 - 2² = 681049 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: 29611 = 681053 / (6 + 8 + 1 + 0 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681253) 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, 14783 + ... + 14828.

It is an arithmetic number, because the mean of its divisors is an integer number (177672).

2⁶⁸¹⁰⁵³ is an apocalyptic number.

It is an amenable number.

681053 is a deficient number, since it is larger than the sum of its proper divisors (29635).

681053 is a wasteful number, since it uses less digits than its factorization.

681053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29634.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 681053 is about 825.2593531733. The cubic root of 681053 is about 87.9819608341.

The spelling of 681053 in words is "six hundred eighty-one thousand, fifty-three".