68815402 has 8 divisors (see below), whose sum is σ = 107711136. Its totient is φ = 32911692.

The previous prime is 68815393. The next prime is 68815403. The reversal of 68815402 is 20451886.

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 (68815403) 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, 747948 + ... + 748039.

It is an arithmetic number, because the mean of its divisors is an integer number (13463892).

Almost surely, 2^68815402 is an apocalyptic number.

68815402 is a deficient number, since it is larger than the sum of its proper divisors (38895734).

68815402 is a wasteful number, since it uses less digits than its factorization.

68815402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496012.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 68815402 is about 8295.5049273688. The cubic root of 68815402 is about 409.7904977653.

The spelling of 68815402 in words is "sixty-eight million, eight hundred fifteen thousand, four hundred two".