68816402 has 8 divisors (see below), whose sum is σ = 104384700. Its totient is φ = 34021504.

The previous prime is 68816401. The next prime is 68816417. The reversal of 68816402 is 20461886.

It can be written as a sum of positive squares in 2 ways, for example, as 67256401 + 1560001 = 8201^2 + 1249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68816401) 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, 193127 + ... + 193482.

Almost surely, 2^68816402 is an apocalyptic number.

68816402 is a deficient number, since it is larger than the sum of its proper divisors (35568298).

68816402 is a wasteful number, since it uses less digits than its factorization.

68816402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386700.

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

The square root of 68816402 is about 8295.5652007564. The cubic root of 68816402 is about 409.7924827304.

The spelling of 68816402 in words is "sixty-eight million, eight hundred sixteen thousand, four hundred two".