64426636 has 6 divisors (see below), whose sum is σ = 112746620. Its totient is φ = 32213316.

The previous prime is 64426627. The next prime is 64426667. The reversal of 64426636 is 63662446.

64426636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64426595 and 64426604.

It is an unprimeable number.

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, 8053326 + ... + 8053333.

Almost surely, 2^64426636 is an apocalyptic number.

It is an amenable number.

64426636 is a deficient number, since it is larger than the sum of its proper divisors (48319984).

64426636 is a wasteful number, since it uses less digits than its factorization.

64426636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16106663 (or 16106661 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

The square root of 64426636 is about 8026.6204594462. The cubic root of 64426636 is about 400.8868572573.

The spelling of 64426636 in words is "sixty-four million, four hundred twenty-six thousand, six hundred thirty-six".