64876240 has 160 divisors (see below), whose sum is σ = 182238336. Its totient is φ = 21166080.

The previous prime is 64876193. The next prime is 64876243. The reversal of 64876240 is 4267846.

It is a self number, because there is not a number n which added to its sum of digits gives 64876240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64876243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 606267 + ... + 606373.

Almost surely, 2^64876240 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 64876240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91119168).

64876240 is an abundant number, since it is smaller than the sum of its proper divisors (117362096).

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

64876240 is a wasteful number, since it uses less digits than its factorization.

64876240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 64876240 is about 8054.5788220117. The cubic root of 64876240 is about 401.8172316703.

The spelling of 64876240 in words is "sixty-four million, eight hundred seventy-six thousand, two hundred forty".