68648011 has 4 divisors (see below), whose sum is σ = 68691832. Its totient is φ = 68604192.

The previous prime is 68648009. The next prime is 68648029. The reversal of 68648011 is 11084686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68648011 - 2¹ = 68648009 is a prime.

It is a super-2 number, since 2×68648011² = 9425098828512242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68648071) 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, 19470 + ... + 22723.

It is an arithmetic number, because the mean of its divisors is an integer number (17172958).

Almost surely, 2^68648011 is an apocalyptic number.

68648011 is a deficient number, since it is larger than the sum of its proper divisors (43821).

68648011 is a wasteful number, since it uses less digits than its factorization.

68648011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43820.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 68648011 is about 8285.4095251834. The cubic root of 68648011 is about 409.4579610899.

The spelling of 68648011 in words is "sixty-eight million, six hundred forty-eight thousand, eleven".