66460806 has 48 divisors (see below), whose sum is σ = 150025824. Its totient is φ = 21244032.

The previous prime is 66460783. The next prime is 66460813. The reversal of 66460806 is 60806466.

66460806 is a `hidden beast` number, since 6 + 646 + 0 + 8 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47935 + ... + 49301.

It is an arithmetic number, because the mean of its divisors is an integer number (3125538).

Almost surely, 2^66460806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66460806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75012912).

66460806 is an abundant number, since it is smaller than the sum of its proper divisors (83565018).

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

66460806 is a wasteful number, since it uses less digits than its factorization.

66460806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 66460806 is about 8152.3497226260. The cubic root of 66460806 is about 405.0623406550.

The spelling of 66460806 in words is "sixty-six million, four hundred sixty thousand, eight hundred six".