66460671 has 12 divisors (see below), whose sum is σ = 98231848. Its totient is φ = 43276464.

The previous prime is 66460657. The next prime is 66460703. The reversal of 66460671 is 17606466.

66460671 is a `hidden beast` number, since 6 + 646 + 0 + 6 + 7 + 1 = 666.

It is not a de Polignac number, because 66460671 - 2⁷ = 66460543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66420671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85480 + ... + 86253.

Almost surely, 2^66460671 is an apocalyptic number.

66460671 is a deficient number, since it is larger than the sum of its proper divisors (31771177).

66460671 is a wasteful number, since it uses less digits than its factorization.

66460671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171782 (or 171779 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 66460671 is about 8152.3414428003. The cubic root of 66460671 is about 405.0620663909.

The spelling of 66460671 in words is "sixty-six million, four hundred sixty thousand, six hundred seventy-one".