681170914 has 4 divisors (see below), whose sum is σ = 1021756374. Its totient is φ = 340585456.

The previous prime is 681170911. The next prime is 681170923. The reversal of 681170914 is 419071186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 419071186 = 2 ⋅209535593.

It can be written as a sum of positive squares in only one way, i.e., 422508025 + 258662889 = 20555^2 + 16083^2 .

It is not an unprimeable number, because it can be changed into a prime (681170911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170292727 + ... + 170292730.

Almost surely, 2^681170914 is an apocalyptic number.

681170914 is a deficient number, since it is larger than the sum of its proper divisors (340585460).

681170914 is a wasteful number, since it uses less digits than its factorization.

681170914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340585459.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 681170914 is about 26099.2512153127. The cubic root of 681170914 is about 879.8703812188.

The spelling of 681170914 in words is "six hundred eighty-one million, one hundred seventy thousand, nine hundred fourteen".