64807552 has 64 divisors (see below), whose sum is σ = 135331560. Its totient is φ = 30883840.

The previous prime is 64807549. The next prime is 64807573. The reversal of 64807552 is 25570846.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36675136 + 28132416 = 6056^2 + 5304^2 .

It is a tau number, because it is divible by the number of its divisors (64).

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, 278028 + ... + 278260.

Almost surely, 2^64807552 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 64807552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67665780).

64807552 is an abundant number, since it is smaller than the sum of its proper divisors (70524008).

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

64807552 is a wasteful number, since it uses less digits than its factorization.

64807552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 64807552 is about 8050.3137827044. The cubic root of 64807552 is about 401.6753730161.

The spelling of 64807552 in words is "sixty-four million, eight hundred seven thousand, five hundred fifty-two".