68587553 has 2 divisors, whose sum is σ = 68587554. Its totient is φ = 68587552.

The previous prime is 68587513. The next prime is 68587573. The reversal of 68587553 is 35578586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62599744 + 5987809 = 7912^2 + 2447^2 .

It is a cyclic number.

It is not a de Polignac number, because 68587553 - 2⁶ = 68587489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68587498 and 68587507.

It is not a weakly prime, because it can be changed into another prime (68587513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34293776 + 34293777.

It is an arithmetic number, because the mean of its divisors is an integer number (34293777).

Almost surely, 2^68587553 is an apocalyptic number.

It is an amenable number.

68587553 is a deficient number, since it is larger than the sum of its proper divisors (1).

68587553 is an equidigital number, since it uses as much as digits as its factorization.

68587553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008000, while the sum is 47.

The square root of 68587553 is about 8281.7602597515. The cubic root of 68587553 is about 409.3377231796.

The spelling of 68587553 in words is "sixty-eight million, five hundred eighty-seven thousand, five hundred fifty-three".