66884347 has 4 divisors (see below), whose sum is σ = 68018040. Its totient is φ = 65750656.

The previous prime is 66884333. The next prime is 66884369. The reversal of 66884347 is 74348866.

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

It is a cyclic number.

It is not a de Polignac number, because 66884347 - 2¹⁵ = 66851579 is a prime.

It is a super-3 number, since 3×66884347³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66884297 and 66884306.

It is not an unprimeable number, because it can be changed into a prime (66884327) 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, 566758 + ... + 566875.

It is an arithmetic number, because the mean of its divisors is an integer number (17004510).

Almost surely, 2^66884347 is an apocalyptic number.

66884347 is a deficient number, since it is larger than the sum of its proper divisors (1133693).

66884347 is a wasteful number, since it uses less digits than its factorization.

66884347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133692.

The product of its digits is 774144, while the sum is 46.

The square root of 66884347 is about 8178.2850891859. The cubic root of 66884347 is about 405.9209788211.

The spelling of 66884347 in words is "sixty-six million, eight hundred eighty-four thousand, three hundred forty-seven".