66466650 has 72 divisors (see below), whose sum is σ = 169301664. Its totient is φ = 17253600.

The previous prime is 66466643. The next prime is 66466661. The reversal of 66466650 is 5666466.

It is a junction number, because it is equal to n+sod(n) for n = 66466599 and 66466608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 841311 + ... + 841389.

It is an arithmetic number, because the mean of its divisors is an integer number (2351412).

Almost surely, 2^66466650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66466650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84650832).

66466650 is an abundant number, since it is smaller than the sum of its proper divisors (102835014).

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

66466650 is a wasteful number, since it uses less digits than its factorization.

66466650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 66466650 is about 8152.7081390174. The cubic root of 66466650 is about 405.0742128901.

The spelling of 66466650 in words is "sixty-six million, four hundred sixty-six thousand, six hundred fifty".