64836424 has 8 divisors (see below), whose sum is σ = 121568310. Its totient is φ = 32418208.

The previous prime is 64836413. The next prime is 64836427. The reversal of 64836424 is 42463846.

It can be written as a sum of positive squares in only one way, i.e., 35784324 + 29052100 = 5982^2 + 5390^2 .

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 (64836427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4052269 + ... + 4052284.

Almost surely, 2^64836424 is an apocalyptic number.

It is an amenable number.

64836424 is a deficient number, since it is larger than the sum of its proper divisors (56731886).

64836424 is a wasteful number, since it uses less digits than its factorization.

64836424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104559 (or 8104555 counting only the distinct ones).

The product of its digits is 110592, while the sum is 37.

The square root of 64836424 is about 8052.1068050542. The cubic root of 64836424 is about 401.7350134399.

The spelling of 64836424 in words is "sixty-four million, eight hundred thirty-six thousand, four hundred twenty-four".