681388114 has 16 divisors (see below), whose sum is σ = 1129115520. Its totient is φ = 305800560.

The previous prime is 681388069. The next prime is 681388121. The reversal of 681388114 is 411883186.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194289 + ... + 197764.

It is an arithmetic number, because the mean of its divisors is an integer number (70569720).

Almost surely, 2^681388114 is an apocalyptic number.

681388114 is a deficient number, since it is larger than the sum of its proper divisors (447727406).

681388114 is a wasteful number, since it uses less digits than its factorization.

681388114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392145.

The product of its digits is 36864, while the sum is 40.

The square root of 681388114 is about 26103.4119225821. The cubic root of 681388114 is about 879.9638905638.

The spelling of 681388114 in words is "six hundred eighty-one million, three hundred eighty-eight thousand, one hundred fourteen".