64627776 has 168 divisors, whose sum is σ = 197921880. Its totient is φ = 20127744.

The previous prime is 64627757. The next prime is 64627793. The reversal of 64627776 is 67772646.

It can be written as a sum of positive squares in 4 ways, for example, as 17842176 + 46785600 = 4224^2 + 6840^2 .

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, 885276 + ... + 885348.

Almost surely, 2^64627776 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 64627776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98960940).

64627776 is an abundant number, since it is smaller than the sum of its proper divisors (133294104).

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

64627776 is a wasteful number, since it uses less digits than its factorization.

64627776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 160 counting only the distinct ones).

The product of its digits is 592704, while the sum is 45.

The square root of 64627776 is about 8039.1402525394. The cubic root of 64627776 is about 401.3036135307.

The spelling of 64627776 in words is "sixty-four million, six hundred twenty-seven thousand, seven hundred seventy-six".