681602834 has 16 divisors (see below), whose sum is σ = 1153811520. Its totient is φ = 299135760.

The previous prime is 681602821. The next prime is 681602849. The reversal of 681602834 is 438206186.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533534 + ... + 534809.

It is an arithmetic number, because the mean of its divisors is an integer number (72113220).

Almost surely, 2^681602834 is an apocalyptic number.

681602834 is a deficient number, since it is larger than the sum of its proper divisors (472208686).

681602834 is a wasteful number, since it uses less digits than its factorization.

681602834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068385.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 681602834 is about 26107.5244709260. The cubic root of 681602834 is about 880.0563126843.

The spelling of 681602834 in words is "six hundred eighty-one million, six hundred two thousand, eight hundred thirty-four".