681414763 has 4 divisors (see below), whose sum is σ = 681472008. Its totient is φ = 681357520.

The previous prime is 681414739. The next prime is 681414779. The reversal of 681414763 is 367414186.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 367414186 = 2 ⋅183707093.

It is a cyclic number.

It is not a de Polignac number, because 681414763 - 2²⁵ = 647860331 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681414733) 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, 3298 + ... + 37063.

It is an arithmetic number, because the mean of its divisors is an integer number (170368002).

Almost surely, 2^681414763 is an apocalyptic number.

681414763 is a deficient number, since it is larger than the sum of its proper divisors (57245).

681414763 is a wasteful number, since it uses less digits than its factorization.

681414763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57244.

The product of its digits is 96768, while the sum is 40.

The square root of 681414763 is about 26103.9223681040. The cubic root of 681414763 is about 879.9753621718.

The spelling of 681414763 in words is "six hundred eighty-one million, four hundred fourteen thousand, seven hundred sixty-three".