68911001 has 2 divisors, whose sum is σ = 68911002. Its totient is φ = 68911000.

The previous prime is 68910973. The next prime is 68911033. The reversal of 68911001 is 10011986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67158025 + 1752976 = 8195^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 68911001 - 2²⁶ = 1802137 is a prime.

It is not a weakly prime, because it can be changed into another prime (68911061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34455500 + 34455501.

It is an arithmetic number, because the mean of its divisors is an integer number (34455501).

Almost surely, 2^68911001 is an apocalyptic number.

It is an amenable number.

68911001 is a deficient number, since it is larger than the sum of its proper divisors (1).

68911001 is an equidigital number, since it uses as much as digits as its factorization.

68911001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 68911001 is about 8301.2650240792. The cubic root of 68911001 is about 409.9801715574.

Adding to 68911001 its reverse (10011986), we get a palindrome (78922987).

The spelling of 68911001 in words is "sixty-eight million, nine hundred eleven thousand, one".