64439696 has 10 divisors (see below), whose sum is σ = 124851942. Its totient is φ = 32219840.

The previous prime is 64439693. The next prime is 64439699. The reversal of 64439696 is 69693446.

64439696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64439693) and next prime (64439699).

It can be written as a sum of positive squares in only one way, i.e., 36772096 + 27667600 = 6064^2 + 5260^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64439696.

It is not an unprimeable number, because it can be changed into a prime (64439693) 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 as a sum of consecutive naturals, namely, 2013725 + ... + 2013756.

Almost surely, 2^64439696 is an apocalyptic number.

It is an amenable number.

64439696 is a deficient number, since it is larger than the sum of its proper divisors (60412246).

64439696 is a wasteful number, since it uses less digits than its factorization.

64439696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4027489 (or 4027483 counting only the distinct ones).

The product of its digits is 839808, while the sum is 47.

The square root of 64439696 is about 8027.4339611111. The cubic root of 64439696 is about 400.9139435110.

The spelling of 64439696 in words is "sixty-four million, four hundred thirty-nine thousand, six hundred ninety-six".