68429953 has 2 divisors, whose sum is σ = 68429954. Its totient is φ = 68429952.

The previous prime is 68429941. The next prime is 68429957. The reversal of 68429953 is 35992486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68425984 + 3969 = 8272^2 + 63^2 .

It is a cyclic number.

It is not a de Polignac number, because 68429953 - 2¹³ = 68421761 is a prime.

It is not a weakly prime, because it can be changed into another prime (68429957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34214976 + 34214977.

It is an arithmetic number, because the mean of its divisors is an integer number (34214977).

Almost surely, 2^68429953 is an apocalyptic number.

It is an amenable number.

68429953 is a deficient number, since it is larger than the sum of its proper divisors (1).

68429953 is an equidigital number, since it uses as much as digits as its factorization.

68429953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The square root of 68429953 is about 8272.2399022272. The cubic root of 68429953 is about 409.0239582812.

The spelling of 68429953 in words is "sixty-eight million, four hundred twenty-nine thousand, nine hundred fifty-three".