64261968 has 20 divisors (see below), whose sum is σ = 166010208. Its totient is φ = 21420640.

The previous prime is 64261961. The next prime is 64261987. The reversal of 64261968 is 86916246.

64261968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64261961) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 669348 + ... + 669443.

Almost surely, 2^64261968 is an apocalyptic number.

It is an amenable number.

64261968 is an abundant number, since it is smaller than the sum of its proper divisors (101748240).

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

64261968 is a wasteful number, since it uses less digits than its factorization.

64261968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338802 (or 1338796 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 64261968 is about 8016.3562795075. The cubic root of 64261968 is about 400.5450237023.

The spelling of 64261968 in words is "sixty-four million, two hundred sixty-one thousand, nine hundred sixty-eight".