64618212 has 12 divisors (see below), whose sum is σ = 150775856. Its totient is φ = 21539400.

The previous prime is 64618189. The next prime is 64618223. The reversal of 64618212 is 21281646.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 64618212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2692414 + ... + 2692437.

Almost surely, 2^64618212 is an apocalyptic number.

It is an amenable number.

64618212 is an abundant number, since it is smaller than the sum of its proper divisors (86157644).

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

64618212 is a wasteful number, since it uses less digits than its factorization.

64618212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5384858 (or 5384856 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 64618212 is about 8038.5453908030. The cubic root of 64618212 is about 401.2838167945.

Adding to 64618212 its reverse (21281646), we get a palindrome (85899858).

The spelling of 64618212 in words is "sixty-four million, six hundred eighteen thousand, two hundred twelve".