68775081 has 32 divisors (see below), whose sum is σ = 102767616. Its totient is φ = 40704000.

The previous prime is 68775043. The next prime is 68775169. The reversal of 68775081 is 18057786.

It is not a de Polignac number, because 68775081 - 2¹⁵ = 68742313 is a prime.

It is a super-2 number, since 2×68775081² = 9460023533113122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68775001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64291 + ... + 65351.

It is an arithmetic number, because the mean of its divisors is an integer number (3211488).

Almost surely, 2^68775081 is an apocalyptic number.

It is an amenable number.

68775081 is a deficient number, since it is larger than the sum of its proper divisors (33992535).

68775081 is a wasteful number, since it uses less digits than its factorization.

68775081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 68775081 is about 8293.0742791802. The cubic root of 68775081 is about 409.7104459631.

The spelling of 68775081 in words is "sixty-eight million, seven hundred seventy-five thousand, eighty-one".