64061587 has 2 divisors, whose sum is σ = 64061588. Its totient is φ = 64061586.

The previous prime is 64061567. The next prime is 64061629. The reversal of 64061587 is 78516046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64061587 - 2¹¹ = 64059539 is a prime.

It is not a weakly prime, because it can be changed into another prime (64061527) 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, 32030793 + 32030794.

It is an arithmetic number, because the mean of its divisors is an integer number (32030794).

Almost surely, 2^64061587 is an apocalyptic number.

64061587 is a deficient number, since it is larger than the sum of its proper divisors (1).

64061587 is an equidigital number, since it uses as much as digits as its factorization.

64061587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 64061587 is about 8003.8482619300. The cubic root of 64061587 is about 400.1282651158.

The spelling of 64061587 in words is "sixty-four million, sixty-one thousand, five hundred eighty-seven".