64452247 has 2 divisors, whose sum is σ = 64452248. Its totient is φ = 64452246.

The previous prime is 64452217. The next prime is 64452251. The reversal of 64452247 is 74225446.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64452247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64452217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32226123 + 32226124.

It is an arithmetic number, because the mean of its divisors is an integer number (32226124).

Almost surely, 2^64452247 is an apocalyptic number.

64452247 is a deficient number, since it is larger than the sum of its proper divisors (1).

64452247 is an equidigital number, since it uses as much as digits as its factorization.

64452247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 34.

The square root of 64452247 is about 8028.2156797136. The cubic root of 64452247 is about 400.9399706577.

The spelling of 64452247 in words is "sixty-four million, four hundred fifty-two thousand, two hundred forty-seven".