681451382 has 8 divisors (see below), whose sum is σ = 1025464752. Its totient is φ = 339629800.

The previous prime is 681451363. The next prime is 681451391. The reversal of 681451382 is 283154186.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547169 + ... + 548412.

It is an arithmetic number, because the mean of its divisors is an integer number (128183094).

Almost surely, 2^681451382 is an apocalyptic number.

681451382 is a deficient number, since it is larger than the sum of its proper divisors (344013370).

681451382 is a wasteful number, since it uses less digits than its factorization.

681451382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095894.

The product of its digits is 46080, while the sum is 38.

The square root of 681451382 is about 26104.6237666816. The cubic root of 681451382 is about 879.9911250827.

The spelling of 681451382 in words is "six hundred eighty-one million, four hundred fifty-one thousand, three hundred eighty-two".