64875540 has 96 divisors (see below), whose sum is σ = 187294464. Its totient is φ = 16773120.

The previous prime is 64875527. The next prime is 64875583. The reversal of 64875540 is 4557846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413142 + ... + 413298.

It is an arithmetic number, because the mean of its divisors is an integer number (1950984).

Almost surely, 2^64875540 is an apocalyptic number.

64875540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64875540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93647232).

64875540 is an abundant number, since it is smaller than the sum of its proper divisors (122418924).

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

64875540 is a wasteful number, since it uses less digits than its factorization.

64875540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 64875540 is about 8054.5353683499. The cubic root of 64875540 is about 401.8157864927.

The spelling of 64875540 in words is "sixty-four million, eight hundred seventy-five thousand, five hundred forty".