681322416 has 40 divisors (see below), whose sum is σ = 1763403504. Its totient is φ = 226679040.

The previous prime is 681322391. The next prime is 681322423. The reversal of 681322416 is 614223186.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12850 + ... + 39086.

Almost surely, 2^681322416 is an apocalyptic number.

It is an amenable number.

681322416 is an abundant number, since it is smaller than the sum of its proper divisors (1082081088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681322416 is a wasteful number, since it uses less digits than its factorization.

681322416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26789 (or 26783 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 681322416 is about 26102.1534743783. The cubic root of 681322416 is about 879.9356082361.

The spelling of 681322416 in words is "six hundred eighty-one million, three hundred twenty-two thousand, four hundred sixteen".