66351416 has 16 divisors (see below), whose sum is σ = 124602840. Its totient is φ = 33124000.

The previous prime is 66351413. The next prime is 66351431. The reversal of 66351416 is 61415366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66351413) 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, 710 + ... + 11541.

Almost surely, 2^66351416 is an apocalyptic number.

It is an amenable number.

66351416 is a deficient number, since it is larger than the sum of its proper divisors (58251424).

66351416 is a wasteful number, since it uses less digits than its factorization.

66351416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12934 (or 12930 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 66351416 is about 8145.6378510219. The cubic root of 66351416 is about 404.8399835263.

The spelling of 66351416 in words is "sixty-six million, three hundred fifty-one thousand, four hundred sixteen".