66411516 has 24 divisors (see below), whose sum is σ = 156467584. Its totient is φ = 21921840.

The previous prime is 66411467. The next prime is 66411523. The reversal of 66411516 is 61511466.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25630 + ... + 28101.

Almost surely, 2^66411516 is an apocalyptic number.

It is an amenable number.

66411516 is an abundant number, since it is smaller than the sum of its proper divisors (90056068).

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

66411516 is a wasteful number, since it uses less digits than its factorization.

66411516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53841 (or 53839 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 66411516 is about 8149.3261071085. The cubic root of 66411516 is about 404.9621790623.

The spelling of 66411516 in words is "sixty-six million, four hundred eleven thousand, five hundred sixteen".