681376332 has 144 divisors (see below), whose sum is σ = 2000705280. Its totient is φ = 175747968.

The previous prime is 681376313. The next prime is 681376351. The reversal of 681376332 is 233673186.

681376332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (681376313) and next prime (681376351).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4901919 + ... + 4902057.

Almost surely, 2^681376332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681376332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000352640).

681376332 is an abundant number, since it is smaller than the sum of its proper divisors (1319328948).

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

681376332 is a wasteful number, since it uses less digits than its factorization.

681376332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 231 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 681376332 is about 26103.1862422962. The cubic root of 681376332 is about 879.9588186652.

The spelling of 681376332 in words is "six hundred eighty-one million, three hundred seventy-six thousand, three hundred thirty-two".