66464248 has 32 divisors (see below), whose sum is σ = 129231360. Its totient is φ = 32012640.

The previous prime is 66464243. The next prime is 66464257. The reversal of 66464248 is 84246466.

It is a self number, because there is not a number n which added to its sum of digits gives 66464248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66464243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69711 + ... + 70657.

It is an arithmetic number, because the mean of its divisors is an integer number (4038480).

Almost surely, 2^66464248 is an apocalyptic number.

It is an amenable number.

66464248 is a deficient number, since it is larger than the sum of its proper divisors (62767112).

66464248 is a wasteful number, since it uses less digits than its factorization.

66464248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1263 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 66464248 is about 8152.5608246734. The cubic root of 66464248 is about 405.0693332501.

The spelling of 66464248 in words is "sixty-six million, four hundred sixty-four thousand, two hundred forty-eight".