66460071 has 4 divisors (see below), whose sum is σ = 88613432. Its totient is φ = 44306712.

The previous prime is 66460061. The next prime is 66460091. The reversal of 66460071 is 17006466.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66460071 - 2⁹ = 66459559 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 (66460061) 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, 11076676 + ... + 11076681.

It is an arithmetic number, because the mean of its divisors is an integer number (22153358).

Almost surely, 2^66460071 is an apocalyptic number.

66460071 is a deficient number, since it is larger than the sum of its proper divisors (22153361).

66460071 is a wasteful number, since it uses less digits than its factorization.

66460071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22153360.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 66460071 is about 8152.3046434735. The cubic root of 66460071 is about 405.0608474345.

The spelling of 66460071 in words is "sixty-six million, four hundred sixty thousand, seventy-one".