64854519 has 16 divisors (see below), whose sum is σ = 87713280. Its totient is φ = 42620480.

The previous prime is 64854499. The next prime is 64854521. The reversal of 64854519 is 91545846.

It is a cyclic number.

It is not a de Polignac number, because 64854519 - 2²⁴ = 48077303 is a prime.

It is a super-2 number, since 2×64854519² = 8412217269442722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64854719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89842 + ... + 90560.

It is an arithmetic number, because the mean of its divisors is an integer number (5482080).

Almost surely, 2^64854519 is an apocalyptic number.

64854519 is a deficient number, since it is larger than the sum of its proper divisors (22858761).

64854519 is a wasteful number, since it uses less digits than its factorization.

64854519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110.

The product of its digits is 172800, while the sum is 42.

The square root of 64854519 is about 8053.2303456439. The cubic root of 64854519 is about 401.7723829639.

The spelling of 64854519 in words is "sixty-four million, eight hundred fifty-four thousand, five hundred nineteen".