64854547 has 2 divisors, whose sum is σ = 64854548. Its totient is φ = 64854546.

The previous prime is 64854533. The next prime is 64854553. The reversal of 64854547 is 74545846.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64854547 is a prime.

It is a super-2 number, since 2×64854547² = 8412224533150418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64854557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32427273 + 32427274.

It is an arithmetic number, because the mean of its divisors is an integer number (32427274).

Almost surely, 2^64854547 is an apocalyptic number.

64854547 is a deficient number, since it is larger than the sum of its proper divisors (1).

64854547 is an equidigital number, since it uses as much as digits as its factorization.

64854547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537600, while the sum is 43.

The square root of 64854547 is about 8053.2320840766. The cubic root of 64854547 is about 401.7724407837.

The spelling of 64854547 in words is "sixty-four million, eight hundred fifty-four thousand, five hundred forty-seven".