681353416 has 16 divisors (see below), whose sum is σ = 1308697740. Its totient is φ = 332367360.

The previous prime is 681353411. The next prime is 681353437. The reversal of 681353416 is 614353186.

It can be written as a sum of positive squares in 2 ways, for example, as 554790916 + 126562500 = 23554^2 + 11250^2 .

It is not an unprimeable number, because it can be changed into a prime (681353411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038321 + ... + 1038976.

Almost surely, 2^681353416 is an apocalyptic number.

It is an amenable number.

681353416 is a deficient number, since it is larger than the sum of its proper divisors (627344324).

681353416 is a wasteful number, since it uses less digits than its factorization.

681353416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077344 (or 2077340 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 681353416 is about 26102.7472883603. The cubic root of 681353416 is about 879.9489536506.

The spelling of 681353416 in words is "six hundred eighty-one million, three hundred fifty-three thousand, four hundred sixteen".