681416935 has 8 divisors (see below), whose sum is σ = 819342000. Its totient is φ = 544039104.

The previous prime is 681416927. The next prime is 681416941. The reversal of 681416935 is 539614186.

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

It is a cyclic number.

It is not a de Polignac number, because 681416935 - 2³ = 681416927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 681416891 and 681416900.

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, 134062 + ... + 139051.

It is an arithmetic number, because the mean of its divisors is an integer number (102417750).

Almost surely, 2^681416935 is an apocalyptic number.

681416935 is a deficient number, since it is larger than the sum of its proper divisors (137925065).

681416935 is a wasteful number, since it uses less digits than its factorization.

681416935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273617.

The product of its digits is 155520, while the sum is 43.

The square root of 681416935 is about 26103.9639710141. The cubic root of 681416935 is about 879.9762971405.

It can be divided in two parts, 68141 and 6935, that added together give a square (75076 = 274²).

The spelling of 681416935 in words is "six hundred eighty-one million, four hundred sixteen thousand, nine hundred thirty-five".