64872016 has 40 divisors (see below), whose sum is σ = 138080448. Its totient is φ = 29280000.

The previous prime is 64872007. The next prime is 64872037. The reversal of 64872016 is 61027846.

It is a congruent number.

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, 25356 + ... + 27796.

Almost surely, 2^64872016 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 64872016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69040224).

64872016 is an abundant number, since it is smaller than the sum of its proper divisors (73208432).

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

64872016 is a wasteful number, since it uses less digits than its factorization.

64872016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611 (or 2605 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 64872016 is about 8054.3166066402. The cubic root of 64872016 is about 401.8085108977.

The spelling of 64872016 in words is "sixty-four million, eight hundred seventy-two thousand, sixteen".