681946341 has 4 divisors (see below), whose sum is σ = 909261792. Its totient is φ = 454630892.

The previous prime is 681946333. The next prime is 681946357. The reversal of 681946341 is 143649186.

681946341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 681946341 - 2³ = 681946333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 681946293 and 681946302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681946361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113657721 + ... + 113657726.

It is an arithmetic number, because the mean of its divisors is an integer number (227315448).

Almost surely, 2^681946341 is an apocalyptic number.

It is an amenable number.

681946341 is a deficient number, since it is larger than the sum of its proper divisors (227315451).

681946341 is a wasteful number, since it uses less digits than its factorization.

681946341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227315450.

The product of its digits is 124416, while the sum is 42.

The square root of 681946341 is about 26114.1023395406. The cubic root of 681946341 is about 880.2041283518.

The spelling of 681946341 in words is "six hundred eighty-one million, nine hundred forty-six thousand, three hundred forty-one".