64345636 has 12 divisors (see below), whose sum is σ = 114513840. Its totient is φ = 31627400.

The previous prime is 64345583. The next prime is 64345637. The reversal of 64345636 is 63654346.

It is a junction number, because it is equal to n+sod(n) for n = 64345595 and 64345604.

It is not an unprimeable number, because it can be changed into a prime (64345637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136090 + ... + 136561.

It is an arithmetic number, because the mean of its divisors is an integer number (9542820).

Almost surely, 2^64345636 is an apocalyptic number.

It is an amenable number.

64345636 is a deficient number, since it is larger than the sum of its proper divisors (50168204).

64345636 is a wasteful number, since it uses less digits than its factorization.

64345636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272714 (or 272712 counting only the distinct ones).

The product of its digits is 155520, while the sum is 37.

The square root of 64345636 is about 8021.5731624165. The cubic root of 64345636 is about 400.7187826053.

The spelling of 64345636 in words is "sixty-four million, three hundred forty-five thousand, six hundred thirty-six".