64281587 has 2 divisors, whose sum is σ = 64281588. Its totient is φ = 64281586.

The previous prime is 64281559. The next prime is 64281601. The reversal of 64281587 is 78518246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64281587 - 2⁸ = 64281331 is a prime.

It is not a weakly prime, because it can be changed into another prime (64281557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32140793 + 32140794.

It is an arithmetic number, because the mean of its divisors is an integer number (32140794).

Almost surely, 2^64281587 is an apocalyptic number.

64281587 is a deficient number, since it is larger than the sum of its proper divisors (1).

64281587 is an equidigital number, since it uses as much as digits as its factorization.

64281587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 41.

The square root of 64281587 is about 8017.5798717568. The cubic root of 64281587 is about 400.5857813152.

The spelling of 64281587 in words is "sixty-four million, two hundred eighty-one thousand, five hundred eighty-seven".