64573447 has 2 divisors, whose sum is σ = 64573448. Its totient is φ = 64573446.

The previous prime is 64573427. The next prime is 64573469. The reversal of 64573447 is 74437546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64573447 - 2¹⁹ = 64049159 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64573427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32286723 + 32286724.

It is an arithmetic number, because the mean of its divisors is an integer number (32286724).

Almost surely, 2^64573447 is an apocalyptic number.

64573447 is a deficient number, since it is larger than the sum of its proper divisors (1).

64573447 is an equidigital number, since it uses as much as digits as its factorization.

64573447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 40.

The square root of 64573447 is about 8035.7605116131. The cubic root of 64573447 is about 401.1911307481.

The spelling of 64573447 in words is "sixty-four million, five hundred seventy-three thousand, four hundred forty-seven".