66416063 has 4 divisors (see below), whose sum is σ = 75904080. Its totient is φ = 56928048.

The previous prime is 66416041. The next prime is 66416069. The reversal of 66416063 is 36061466.

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 66416063 - 2¹² = 66411967 is a prime.

It is a super-2 number, since 2×66416063² = 8822186848839938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66416069) 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, 4743998 + ... + 4744011.

It is an arithmetic number, because the mean of its divisors is an integer number (18976020).

Almost surely, 2^66416063 is an apocalyptic number.

66416063 is a deficient number, since it is larger than the sum of its proper divisors (9488017).

66416063 is an equidigital number, since it uses as much as digits as its factorization.

66416063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9488016.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66416063 is about 8149.6050824564. The cubic root of 66416063 is about 404.9714210388.

The spelling of 66416063 in words is "sixty-six million, four hundred sixteen thousand, sixty-three".