64546240 has 84 divisors (see below), whose sum is σ = 169045128. Its totient is φ = 23457280.

The previous prime is 64546231. The next prime is 64546253. The reversal of 64546240 is 4264546.

64546240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37887 + ... + 39553.

It is an arithmetic number, because the mean of its divisors is an integer number (2012442).

Almost surely, 2^64546240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64546240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84522564).

64546240 is an abundant number, since it is smaller than the sum of its proper divisors (104498888).

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

64546240 is a wasteful number, since it uses less digits than its factorization.

64546240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 64546240 is about 8034.0674629978. The cubic root of 64546240 is about 401.1347776549.

The spelling of 64546240 in words is "sixty-four million, five hundred forty-six thousand, two hundred forty".