64567247 has 2 divisors, whose sum is σ = 64567248. Its totient is φ = 64567246.

The previous prime is 64567231. The next prime is 64567249. The reversal of 64567247 is 74276546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64567247 - 2⁴ = 64567231 is a prime.

Together with 64567249, 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 (64567249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32283623 + 32283624.

It is an arithmetic number, because the mean of its divisors is an integer number (32283624).

Almost surely, 2^64567247 is an apocalyptic number.

64567247 is a deficient number, since it is larger than the sum of its proper divisors (1).

64567247 is an equidigital number, since it uses as much as digits as its factorization.

64567247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 41.

The square root of 64567247 is about 8035.3747267940. The cubic root of 64567247 is about 401.1782902554.

The spelling of 64567247 in words is "sixty-four million, five hundred sixty-seven thousand, two hundred forty-seven".