68686033 has 8 divisors (see below), whose sum is σ = 74625768. Its totient is φ = 62840064.

The previous prime is 68686021. The next prime is 68686063. The reversal of 68686033 is 33068686.

It can be written as a sum of positive squares in 4 ways, for example, as 986049 + 67699984 = 993^2 + 8228^2 .

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 68686033 - 2¹⁷ = 68554961 is a prime.

It is a super-2 number, since 2×68686033² = 9435542258554178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68686063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21910 + ... + 24847.

It is an arithmetic number, because the mean of its divisors is an integer number (9328221).

Almost surely, 2^68686033 is an apocalyptic number.

It is an amenable number.

68686033 is a deficient number, since it is larger than the sum of its proper divisors (5939735).

68686033 is a wasteful number, since it uses less digits than its factorization.

68686033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46883.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 68686033 is about 8287.7037229862. The cubic root of 68686033 is about 409.5335424844.

The spelling of 68686033 in words is "sixty-eight million, six hundred eighty-six thousand, thirty-three".