68198723 has 2 divisors, whose sum is σ = 68198724. Its totient is φ = 68198722.

The previous prime is 68198707. The next prime is 68198743. The reversal of 68198723 is 32789186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68198723 - 2⁴ = 68198707 is a prime.

It is not a weakly prime, because it can be changed into another prime (68198743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34099361 + 34099362.

It is an arithmetic number, because the mean of its divisors is an integer number (34099362).

Almost surely, 2^68198723 is an apocalyptic number.

68198723 is a deficient number, since it is larger than the sum of its proper divisors (1).

68198723 is an equidigital number, since it uses as much as digits as its factorization.

68198723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 68198723 is about 8258.2518125812. The cubic root of 68198723 is about 408.5627307261.

It can be divided in two parts, 68198 and 723, that added together give a cube (68921 = 41³).

The spelling of 68198723 in words is "sixty-eight million, one hundred ninety-eight thousand, seven hundred twenty-three".