66514716 has 48 divisors (see below), whose sum is σ = 178017280. Its totient is φ = 21455280.

The previous prime is 66514703. The next prime is 66514739. The reversal of 66514716 is 61741566.

It is a super-3 number, since 3×66514716³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6586 + ... + 13281.

Almost surely, 2^66514716 is an apocalyptic number.

It is an amenable number.

66514716 is an abundant number, since it is smaller than the sum of its proper divisors (111502564).

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

66514716 is a wasteful number, since it uses less digits than its factorization.

66514716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19911 (or 19903 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 66514716 is about 8155.6554610896. The cubic root of 66514716 is about 405.1718338054.

The spelling of 66514716 in words is "sixty-six million, five hundred fourteen thousand, seven hundred sixteen".