64888531 has 2 divisors, whose sum is σ = 64888532. Its totient is φ = 64888530.

The previous prime is 64888501. The next prime is 64888547. The reversal of 64888531 is 13588846.

64888531 is nontrivially palindromic in base 16.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64888531 - 2¹¹ = 64886483 is a prime.

It is a super-2 number, since 2×64888531² = 8421042910675922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64888501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32444265 + 32444266.

It is an arithmetic number, because the mean of its divisors is an integer number (32444266).

Almost surely, 2^64888531 is an apocalyptic number.

64888531 is a deficient number, since it is larger than the sum of its proper divisors (1).

64888531 is an equidigital number, since it uses as much as digits as its factorization.

64888531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 43.

The square root of 64888531 is about 8055.3417680444. The cubic root of 64888531 is about 401.8426052316.

The spelling of 64888531 in words is "sixty-four million, eight hundred eighty-eight thousand, five hundred thirty-one".