681437314 has 4 divisors (see below), whose sum is σ = 1022155974. Its totient is φ = 340718656.

The previous prime is 681437303. The next prime is 681437327. The reversal of 681437314 is 413734186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 413734186 = 2 ⋅206867093.

It can be written as a sum of positive squares in only one way, i.e., 570493225 + 110944089 = 23885^2 + 10533^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170359327 + ... + 170359330.

Almost surely, 2^681437314 is an apocalyptic number.

681437314 is a deficient number, since it is larger than the sum of its proper divisors (340718660).

681437314 is a wasteful number, since it uses less digits than its factorization.

681437314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340718659.

The product of its digits is 48384, while the sum is 37.

The square root of 681437314 is about 26104.3543111106. The cubic root of 681437314 is about 879.9850694781.

It can be divided in two parts, 68143 and 7314, that added together give a palindrome (75457).

The spelling of 681437314 in words is "six hundred eighty-one million, four hundred thirty-seven thousand, three hundred fourteen".