64635312 has 60 divisors (see below), whose sum is σ = 194242776. Its totient is φ = 18466560.

The previous prime is 64635301. The next prime is 64635317. The reversal of 64635312 is 21353646.

It is a self number, because there is not a number n which added to its sum of digits gives 64635312.

It is not an unprimeable number, because it can be changed into a prime (64635317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11389 + ... + 16092.

Almost surely, 2^64635312 is an apocalyptic number.

It is an amenable number.

64635312 is an abundant number, since it is smaller than the sum of its proper divisors (129607464).

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

64635312 is a wasteful number, since it uses less digits than its factorization.

64635312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27506 (or 27493 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 64635312 is about 8039.6089457137. The cubic root of 64635312 is about 401.3192110889.

Adding to 64635312 its reverse (21353646), we get a palindrome (85988958).

It can be divided in two parts, 6 and 4635312, that multiplied together give a palindrome (27811872).

The spelling of 64635312 in words is "sixty-four million, six hundred thirty-five thousand, three hundred twelve".