64548736 has 64 divisors (see below), whose sum is σ = 149499360. Its totient is φ = 27187200.

The previous prime is 64548733. The next prime is 64548739. The reversal of 64548736 is 63784546.

It is an interprime number because it is at equal distance from previous prime (64548733) and next prime (64548739).

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

It is a junction number, because it is equal to n+sod(n) for n = 64548692 and 64548701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64548733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54066 + ... + 55246.

Almost surely, 2^64548736 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 64548736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74749680).

64548736 is an abundant number, since it is smaller than the sum of its proper divisors (84950624).

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

64548736 is a wasteful number, since it uses less digits than its factorization.

64548736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1251 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 64548736 is about 8034.2227999975. Note that the first 3 decimals coincide. The cubic root of 64548736 is about 401.1399482091.

The spelling of 64548736 in words is "sixty-four million, five hundred forty-eight thousand, seven hundred thirty-six".