67064648 has 32 divisors (see below), whose sum is σ = 145041600. Its totient is φ = 28475712.

The previous prime is 67064633. The next prime is 67064671. The reversal of 67064648 is 84646076.

It is a super-4 number, since 4×67064648⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 611 + ... + 11597.

It is an arithmetic number, because the mean of its divisors is an integer number (4532550).

Almost surely, 2^67064648 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 67064648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72520800).

67064648 is an abundant number, since it is smaller than the sum of its proper divisors (77976952).

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

67064648 is a wasteful number, since it uses less digits than its factorization.

67064648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109 (or 11105 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 67064648 is about 8189.3008248568. The cubic root of 67064648 is about 406.2854003708.

The spelling of 67064648 in words is "sixty-seven million, sixty-four thousand, six hundred forty-eight".