64487424 has 80 divisors (see below), whose sum is σ = 176160600. Its totient is φ = 20971520.

The previous prime is 64487417. The next prime is 64487441. The reversal of 64487424 is 42478446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1572844 + ... + 1572884.

Almost surely, 2^64487424 is an apocalyptic number.

64487424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64487424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88080300).

64487424 is an abundant number, since it is smaller than the sum of its proper divisors (111673176).

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

64487424 is an frugal number, since it uses more digits than its factorization.

64487424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 46 counting only the distinct ones).

The product of its digits is 172032, while the sum is 39.

The square root of 64487424 is about 8030.4062163754. The cubic root of 64487424 is about 401.0128995877.

The spelling of 64487424 in words is "sixty-four million, four hundred eighty-seven thousand, four hundred twenty-four".