64668036 has 12 divisors (see below), whose sum is σ = 150892112. Its totient is φ = 21556008.

The previous prime is 64668031. The next prime is 64668049. The reversal of 64668036 is 63086646.

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

It is a junction number, because it is equal to n+sod(n) for n = 64667985 and 64668003.

It is not an unprimeable number, because it can be changed into a prime (64668031) 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, 2694490 + ... + 2694513.

Almost surely, 2^64668036 is an apocalyptic number.

It is an amenable number.

64668036 is an abundant number, since it is smaller than the sum of its proper divisors (86224076).

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

64668036 is a wasteful number, since it uses less digits than its factorization.

64668036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389010 (or 5389008 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 64668036 is about 8041.6438617984. The cubic root of 64668036 is about 401.3869271911.

The spelling of 64668036 in words is "sixty-four million, six hundred sixty-eight thousand, thirty-six".