64716456 has 96 divisors (see below), whose sum is σ = 190261440. Its totient is φ = 18289152.

The previous prime is 64716403. The next prime is 64716473. The reversal of 64716456 is 65461746.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 132645 + ... + 133131.

It is an arithmetic number, because the mean of its divisors is an integer number (1981890).

Almost surely, 2^64716456 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 64716456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95130720).

64716456 is an abundant number, since it is smaller than the sum of its proper divisors (125544984).

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

64716456 is a wasteful number, since it uses less digits than its factorization.

64716456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 612 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 64716456 is about 8044.6538769546. The cubic root of 64716456 is about 401.4870812886.

The spelling of 64716456 in words is "sixty-four million, seven hundred sixteen thousand, four hundred fifty-six".