64506487 has 2 divisors, whose sum is σ = 64506488. Its totient is φ = 64506486.

The previous prime is 64506479. The next prime is 64506509. The reversal of 64506487 is 78460546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64506487 - 2³ = 64506479 is a prime.

It is a super-2 number, since 2×64506487² = 8322173730162338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64506427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32253243 + 32253244.

It is an arithmetic number, because the mean of its divisors is an integer number (32253244).

Almost surely, 2^64506487 is an apocalyptic number.

64506487 is a deficient number, since it is larger than the sum of its proper divisors (1).

64506487 is an equidigital number, since it uses as much as digits as its factorization.

64506487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 64506487 is about 8031.5930549300. The cubic root of 64506487 is about 401.0524099051.

The spelling of 64506487 in words is "sixty-four million, five hundred six thousand, four hundred eighty-seven".