66410616 has 32 divisors (see below), whose sum is σ = 166262400. Its totient is φ = 22105440.

The previous prime is 66410593. The next prime is 66410627. The reversal of 66410616 is 61601466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20551 + ... + 23561.

It is an arithmetic number, because the mean of its divisors is an integer number (5195700).

Almost surely, 2^66410616 is an apocalyptic number.

It is an amenable number.

66410616 is an abundant number, since it is smaller than the sum of its proper divisors (99851784).

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

66410616 is a wasteful number, since it uses less digits than its factorization.

66410616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939 (or 3935 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 66410616 is about 8149.2708876316. The cubic root of 66410616 is about 404.9603497229.

The spelling of 66410616 in words is "sixty-six million, four hundred ten thousand, six hundred sixteen".