64394496 has 108 divisors (see below), whose sum is σ = 195569920. Its totient is φ = 20321280.

The previous prime is 64394489. The next prime is 64394497. The reversal of 64394496 is 69449346.

It is a happy number.

It is a super-2 number, since 2×64394496² = 8293302230188032, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64394497) 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 in 11 ways as a sum of consecutive naturals, for example, 43041 + ... + 44511.

Almost surely, 2^64394496 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 64394496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97784960).

64394496 is an abundant number, since it is smaller than the sum of its proper divisors (131175424).

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

64394496 is a wasteful number, since it uses less digits than its factorization.

64394496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1495 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 64394496 is about 8024.6181217551. The cubic root of 64394496 is about 400.8201837637.

The spelling of 64394496 in words is "sixty-four million, three hundred ninety-four thousand, four hundred ninety-six".