68803690 has 8 divisors (see below), whose sum is σ = 123846660. Its totient is φ = 27521472.

The previous prime is 68803687. The next prime is 68803697. The reversal of 68803690 is 9630886.

It can be written as a sum of positive squares in 2 ways, for example, as 60980481 + 7823209 = 7809^2 + 2797^2 .

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

It is a super-2 number, since 2×68803690² = 9467895515232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68803697) 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, 3440175 + ... + 3440194.

Almost surely, 2^68803690 is an apocalyptic number.

68803690 is a deficient number, since it is larger than the sum of its proper divisors (55042970).

68803690 is a wasteful number, since it uses less digits than its factorization.

68803690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880376.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 68803690 is about 8294.7989728504. The cubic root of 68803690 is about 409.7672484225.

The spelling of 68803690 in words is "sixty-eight million, eight hundred three thousand, six hundred ninety".