68624587 has 2 divisors, whose sum is σ = 68624588. Its totient is φ = 68624586.

The previous prime is 68624537. The next prime is 68624609. The reversal of 68624587 is 78542686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68624587 - 2¹⁹ = 68100299 is a prime.

It is not a weakly prime, because it can be changed into another prime (68624537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34312293 + 34312294.

It is an arithmetic number, because the mean of its divisors is an integer number (34312294).

Almost surely, 2^68624587 is an apocalyptic number.

68624587 is a deficient number, since it is larger than the sum of its proper divisors (1).

68624587 is an equidigital number, since it uses as much as digits as its factorization.

68624587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 46.

The square root of 68624587 is about 8283.9958353442. The cubic root of 68624587 is about 409.4113841911.

It can be divided in two parts, 6862 and 4587, that added together give a square (11449 = 107²).

The spelling of 68624587 in words is "sixty-eight million, six hundred twenty-four thousand, five hundred eighty-seven".