64851696 has 240 divisors, whose sum is σ = 230193600. Its totient is φ = 16934400.

The previous prime is 64851671. The next prime is 64851733. The reversal of 64851696 is 69615846.

64851696 is a `hidden beast` number, since 6 + 48 + 516 + 96 = 666.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 642046 + ... + 642146.

It is an arithmetic number, because the mean of its divisors is an integer number (959140).

Almost surely, 2^64851696 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 64851696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115096800).

64851696 is an abundant number, since it is smaller than the sum of its proper divisors (165341904).

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

64851696 is a wasteful number, since it uses less digits than its factorization.

64851696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 126 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 64851696 is about 8053.0550724554. The cubic root of 64851696 is about 401.7665534041.

The spelling of 64851696 in words is "sixty-four million, eight hundred fifty-one thousand, six hundred ninety-six".