64755776 has 56 divisors (see below), whose sum is σ = 134209536. Its totient is φ = 30965760.

The previous prime is 64755767. The next prime is 64755793. The reversal of 64755776 is 67755746.

It is a self number, because there is not a number n which added to its sum of digits gives 64755776.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251840 + ... + 252096.

Almost surely, 2^64755776 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 64755776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67104768).

64755776 is an abundant number, since it is smaller than the sum of its proper divisors (69453760).

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

64755776 is a wasteful number, since it uses less digits than its factorization.

64755776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 417 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 47.

The square root of 64755776 is about 8047.0973648888. The cubic root of 64755776 is about 401.5683757895.

The spelling of 64755776 in words is "sixty-four million, seven hundred fifty-five thousand, seven hundred seventy-six".