64666012 has 12 divisors (see below), whose sum is σ = 113860936. Its totient is φ = 32134320.

The previous prime is 64666009. The next prime is 64666013. The reversal of 64666012 is 21066646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64666013) 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, 48939 + ... + 50242.

Almost surely, 2^64666012 is an apocalyptic number.

It is an amenable number.

64666012 is a deficient number, since it is larger than the sum of its proper divisors (49194924).

64666012 is a wasteful number, since it uses less digits than its factorization.

64666012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99348 (or 99346 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 64666012 is about 8041.5180158972. The cubic root of 64666012 is about 401.3827395704.

The spelling of 64666012 in words is "sixty-four million, six hundred sixty-six thousand, twelve".