66248163 has 6 divisors (see below), whose sum is σ = 95691804. Its totient is φ = 44165436.

The previous prime is 66248123. The next prime is 66248197. The reversal of 66248163 is 36184266.

It is not a de Polignac number, because 66248163 - 2¹² = 66244067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66248113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3680445 + ... + 3680462.

It is an arithmetic number, because the mean of its divisors is an integer number (15948634).

Almost surely, 2^66248163 is an apocalyptic number.

66248163 is a deficient number, since it is larger than the sum of its proper divisors (29443641).

66248163 is a wasteful number, since it uses less digits than its factorization.

66248163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7360913 (or 7360910 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 66248163 is about 8139.2974512546. The cubic root of 66248163 is about 404.6298767594.

The spelling of 66248163 in words is "sixty-six million, two hundred forty-eight thousand, one hundred sixty-three".