64184987 has 2 divisors, whose sum is σ = 64184988. Its totient is φ = 64184986.

The previous prime is 64184971. The next prime is 64185001. The reversal of 64184987 is 78948146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64184987 - 2⁴ = 64184971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64184957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32092493 + 32092494.

It is an arithmetic number, because the mean of its divisors is an integer number (32092494).

Almost surely, 2^64184987 is an apocalyptic number.

64184987 is a deficient number, since it is larger than the sum of its proper divisors (1).

64184987 is an equidigital number, since it uses as much as digits as its factorization.

64184987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The square root of 64184987 is about 8011.5533450137. The cubic root of 64184987 is about 400.3850188656.

The spelling of 64184987 in words is "sixty-four million, one hundred eighty-four thousand, nine hundred eighty-seven".