64655360 has 208 divisors, whose sum is σ = 198156672. Its totient is φ = 19660800.

The previous prime is 64655329. The next prime is 64655363. The reversal of 64655360 is 6355646.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 64655360.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64655363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1576940 + ... + 1576980.

Almost surely, 2^64655360 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 64655360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99078336).

64655360 is an abundant number, since it is smaller than the sum of its proper divisors (133501312).

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

64655360 is a wasteful number, since it uses less digits than its factorization.

64655360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 64655360 is about 8040.8556758594. The cubic root of 64655360 is about 401.3606993281.

The spelling of 64655360 in words is "sixty-four million, six hundred fifty-five thousand, three hundred sixty".