68225737 has 2 divisors, whose sum is σ = 68225738. Its totient is φ = 68225736.

The previous prime is 68225723. The next prime is 68225747. The reversal of 68225737 is 73752286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53640976 + 14584761 = 7324^2 + 3819^2 .

It is a cyclic number.

It is not a de Polignac number, because 68225737 - 2⁷ = 68225609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68225737.

It is not a weakly prime, because it can be changed into another prime (68225747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34112868 + 34112869.

It is an arithmetic number, because the mean of its divisors is an integer number (34112869).

Almost surely, 2^68225737 is an apocalyptic number.

It is an amenable number.

68225737 is a deficient number, since it is larger than the sum of its proper divisors (1).

68225737 is an equidigital number, since it uses as much as digits as its factorization.

68225737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 68225737 is about 8259.8872268331. The cubic root of 68225737 is about 408.6166684744.

The spelling of 68225737 in words is "sixty-eight million, two hundred twenty-five thousand, seven hundred thirty-seven".