64912487 has 2 divisors, whose sum is σ = 64912488. Its totient is φ = 64912486.

The previous prime is 64912459. The next prime is 64912489. The reversal of 64912487 is 78421946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64912487 - 2⁶ = 64912423 is a prime.

Together with 64912489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64912489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32456243 + 32456244.

It is an arithmetic number, because the mean of its divisors is an integer number (32456244).

Almost surely, 2^64912487 is an apocalyptic number.

64912487 is a deficient number, since it is larger than the sum of its proper divisors (1).

64912487 is an equidigital number, since it uses as much as digits as its factorization.

64912487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 64912487 is about 8056.8285944285. The cubic root of 64912487 is about 401.8920508315.

The spelling of 64912487 in words is "sixty-four million, nine hundred twelve thousand, four hundred eighty-seven".