681401348 has 12 divisors (see below), whose sum is σ = 1204259532. Its totient is φ = 337327200.

The previous prime is 681401321. The next prime is 681401363. The reversal of 681401348 is 843104186.

It can be written as a sum of positive squares in 2 ways, for example, as 470803204 + 210598144 = 21698^2 + 14512^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842915 + ... + 843722.

It is an arithmetic number, because the mean of its divisors is an integer number (100354961).

Almost surely, 2^681401348 is an apocalyptic number.

It is an amenable number.

681401348 is a deficient number, since it is larger than the sum of its proper divisors (522858184).

681401348 is a wasteful number, since it uses less digits than its factorization.

681401348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686742 (or 1686740 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 681401348 is about 26103.6654131178. The cubic root of 681401348 is about 879.9695874476.

The spelling of 681401348 in words is "six hundred eighty-one million, four hundred one thousand, three hundred forty-eight".