68627569 has 2 divisors, whose sum is σ = 68627570. Its totient is φ = 68627568.

The previous prime is 68627513. The next prime is 68627579. The reversal of 68627569 is 96572686.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68558400 + 69169 = 8280^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 68627569 - 2⁹ = 68627057 is a prime.

It is a super-2 number, since 2×68627569² = 9419486453699522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68627509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34313784 + 34313785.

It is an arithmetic number, because the mean of its divisors is an integer number (34313785).

Almost surely, 2^68627569 is an apocalyptic number.

It is an amenable number.

68627569 is a deficient number, since it is larger than the sum of its proper divisors (1).

68627569 is an equidigital number, since it uses as much as digits as its factorization.

68627569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 68627569 is about 8284.1758189937. The cubic root of 68627569 is about 409.4173142672.

It can be divided in two parts, 68627 and 569, that added together give a palindrome (69196).

The spelling of 68627569 in words is "sixty-eight million, six hundred twenty-seven thousand, five hundred sixty-nine".