64554144 has 24 divisors (see below), whose sum is σ = 169454880. Its totient is φ = 21518016.

The previous prime is 64554107. The next prime is 64554157. The reversal of 64554144 is 44145546.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336124 + ... + 336315.

It is an arithmetic number, because the mean of its divisors is an integer number (7060620).

Almost surely, 2^64554144 is an apocalyptic number.

It is an amenable number.

64554144 is an abundant number, since it is smaller than the sum of its proper divisors (104900736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64554144 is a wasteful number, since it uses less digits than its factorization.

64554144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672452 (or 672444 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 64554144 is about 8034.5593531942. The cubic root of 64554144 is about 401.1511506193.

The spelling of 64554144 in words is "sixty-four million, five hundred fifty-four thousand, one hundred forty-four".