66865848 has 32 divisors (see below), whose sum is σ = 191045760. Its totient is φ = 19104480.

The previous prime is 66865847. The next prime is 66865891. The reversal of 66865848 is 84856866.

It is a self number, because there is not a number n which added to its sum of digits gives 66865848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66865847) 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, 198838 + ... + 199173.

It is an arithmetic number, because the mean of its divisors is an integer number (5970180).

Almost surely, 2^66865848 is an apocalyptic number.

It is an amenable number.

66865848 is an abundant number, since it is smaller than the sum of its proper divisors (124179912).

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

66865848 is a wasteful number, since it uses less digits than its factorization.

66865848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398027 (or 398023 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The square root of 66865848 is about 8177.1540281445. The cubic root of 66865848 is about 405.8835519047.

The spelling of 66865848 in words is "sixty-six million, eight hundred sixty-five thousand, eight hundred forty-eight".