64671488 has 72 divisors (see below), whose sum is σ = 149130240. Its totient is φ = 27417600.

The previous prime is 64671461. The next prime is 64671491. The reversal of 64671488 is 88417646.

64671488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270473 + ... + 270711.

Almost surely, 2^64671488 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 64671488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74565120).

64671488 is an abundant number, since it is smaller than the sum of its proper divisors (84458752).

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

64671488 is a wasteful number, since it uses less digits than its factorization.

64671488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 399 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 64671488 is about 8041.8584916672. The cubic root of 64671488 is about 401.3940691173.

The spelling of 64671488 in words is "sixty-four million, six hundred seventy-one thousand, four hundred eighty-eight".