67528987 has 2 divisors, whose sum is σ = 67528988. Its totient is φ = 67528986.

The previous prime is 67528957. The next prime is 67528991. The reversal of 67528987 is 78982576.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67528987 is a prime.

It is not a weakly prime, because it can be changed into another prime (67528957) 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, 33764493 + 33764494.

It is an arithmetic number, because the mean of its divisors is an integer number (33764494).

Almost surely, 2^67528987 is an apocalyptic number.

67528987 is a deficient number, since it is larger than the sum of its proper divisors (1).

67528987 is an equidigital number, since it uses as much as digits as its factorization.

67528987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 52.

The square root of 67528987 is about 8217.6022658681. The cubic root of 67528987 is about 407.2209177211.

The spelling of 67528987 in words is "sixty-seven million, five hundred twenty-eight thousand, nine hundred eighty-seven".