64493896 has 8 divisors (see below), whose sum is σ = 120926070. Its totient is φ = 32246944.

The previous prime is 64493887. The next prime is 64493899. The reversal of 64493896 is 69839446.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 12996 = 8030^2 + 114^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (64493899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4030861 + ... + 4030876.

Almost surely, 2^64493896 is an apocalyptic number.

It is an amenable number.

64493896 is a deficient number, since it is larger than the sum of its proper divisors (56432174).

64493896 is a wasteful number, since it uses less digits than its factorization.

64493896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8061743 (or 8061739 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The square root of 64493896 is about 8030.8091746723. The cubic root of 64493896 is about 401.0263144445.

The spelling of 64493896 in words is "sixty-four million, four hundred ninety-three thousand, eight hundred ninety-six".