64611456 has 192 divisors, whose sum is σ = 216256320. Its totient is φ = 16644096.

The previous prime is 64611341. The next prime is 64611461. The reversal of 64611456 is 65411646.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1502571 + ... + 1502613.

It is an arithmetic number, because the mean of its divisors is an integer number (1126335).

Almost surely, 2^64611456 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 64611456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108128160).

64611456 is an abundant number, since it is smaller than the sum of its proper divisors (151644864).

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

64611456 is a wasteful number, since it uses less digits than its factorization.

64611456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 68 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 64611456 is about 8038.1251545370. The cubic root of 64611456 is about 401.2698312226.

The spelling of 64611456 in words is "sixty-four million, six hundred eleven thousand, four hundred fifty-six".