68003149 has 2 divisors, whose sum is σ = 68003150. Its totient is φ = 68003148.

The previous prime is 68003141. The next prime is 68003171. The reversal of 68003149 is 94130086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59182249 + 8820900 = 7693^2 + 2970^2 .

It is a cyclic number.

It is not a de Polignac number, because 68003149 - 2³ = 68003141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68003149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68003141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34001574 + 34001575.

It is an arithmetic number, because the mean of its divisors is an integer number (34001575).

Almost surely, 2^68003149 is an apocalyptic number.

It is an amenable number.

68003149 is a deficient number, since it is larger than the sum of its proper divisors (1).

68003149 is an equidigital number, since it uses as much as digits as its factorization.

68003149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 68003149 is about 8246.4021851957. The cubic root of 68003149 is about 408.1718106493.

The spelling of 68003149 in words is "sixty-eight million, three thousand, one hundred forty-nine".