68803505 has 8 divisors (see below), whose sum is σ = 87421032. Its totient is φ = 51804928.

The previous prime is 68803489. The next prime is 68803517. The reversal of 68803505 is 50530886.

It can be written as a sum of positive squares in 4 ways, for example, as 15936064 + 52867441 = 3992^2 + 7271^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68803505 - 2⁴ = 68803489 is a prime.

It is a Duffinian 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, 404642 + ... + 404811.

It is an arithmetic number, because the mean of its divisors is an integer number (10927629).

Almost surely, 2^68803505 is an apocalyptic number.

It is an amenable number.

68803505 is a deficient number, since it is larger than the sum of its proper divisors (18617527).

68803505 is a wasteful number, since it uses less digits than its factorization.

68803505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809475.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 68803505 is about 8294.7878212767. The cubic root of 68803505 is about 409.7668811602.

The spelling of 68803505 in words is "sixty-eight million, eight hundred three thousand, five hundred five".