681150929 has 4 divisors (see below), whose sum is σ = 692695920. Its totient is φ = 669605940.

The previous prime is 681150907. The next prime is 681150947. The reversal of 681150929 is 929051186.

It is a happy number.

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 681150929 - 2¹² = 681146833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681150959) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5772407 + ... + 5772524.

It is an arithmetic number, because the mean of its divisors is an integer number (173173980).

Almost surely, 2^681150929 is an apocalyptic number.

It is an amenable number.

681150929 is a deficient number, since it is larger than the sum of its proper divisors (11544991).

681150929 is a wasteful number, since it uses less digits than its factorization.

681150929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11544990.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 681150929 is about 26098.8683471142. The cubic root of 681150929 is about 879.8617762411.

The spelling of 681150929 in words is "six hundred eighty-one million, one hundred fifty thousand, nine hundred twenty-nine".