66868334 has 32 divisors (see below), whose sum is σ = 114401280. Its totient is φ = 29058912.

The previous prime is 66868331. The next prime is 66868343. The reversal of 66868334 is 43386866.

Its product of digits (497664) is a multiple of the sum of its prime divisors (864).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66868331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109859 + ... + 110465.

It is an arithmetic number, because the mean of its divisors is an integer number (3575040).

Almost surely, 2^66868334 is an apocalyptic number.

66868334 is a deficient number, since it is larger than the sum of its proper divisors (47532946).

66868334 is a wasteful number, since it uses less digits than its factorization.

66868334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its digits is 497664, while the sum is 44.

The square root of 66868334 is about 8177.3060356085. The cubic root of 66868334 is about 405.8885819464. Note that the first 3 decimals are identical.

The spelling of 66868334 in words is "sixty-six million, eight hundred sixty-eight thousand, three hundred thirty-four".