681514 has 4 divisors (see below), whose sum is σ = 1022274. Its totient is φ = 340756.

The previous prime is 681497. The next prime is 681521. The reversal of 681514 is 415186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 415186 = 2 ⋅207593.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 33489 = 805^2 + 183^2 .

It is a super-2 number, since 2×681514² = 928922664392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170377 + ... + 170380.

2⁶⁸¹⁵¹⁴ is an apocalyptic number.

681514 is a deficient number, since it is larger than the sum of its proper divisors (340760).

681514 is a wasteful number, since it uses less digits than its factorization.

681514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340759.

The product of its digits is 960, while the sum is 25.

The square root of 681514 is about 825.5386120588. The cubic root of 681514 is about 88.0018078141.

The spelling of 681514 in words is "six hundred eighty-one thousand, five hundred fourteen".