681414535 has 8 divisors (see below), whose sum is σ = 818069616. Its totient is φ = 544883520.

The previous prime is 681414511. The next prime is 681414551. The reversal of 681414535 is 535414186.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 681414535 - 2²¹ = 679317383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 681414494 and 681414503.

It is a congruent number.

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, 18469 + ... + 41278.

It is an arithmetic number, because the mean of its divisors is an integer number (102258702).

Almost surely, 2^681414535 is an apocalyptic number.

681414535 is a deficient number, since it is larger than the sum of its proper divisors (136655081).

681414535 is a wasteful number, since it uses less digits than its factorization.

681414535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62033.

The product of its digits is 57600, while the sum is 37.

The square root of 681414535 is about 26103.9180009438. The cubic root of 681414535 is about 879.9752640258.

The spelling of 681414535 in words is "six hundred eighty-one million, four hundred fourteen thousand, five hundred thirty-five".