66844992 has 56 divisors (see below), whose sum is σ = 184562496. Its totient is φ = 21311488.

The previous prime is 66844937. The next prime is 66845027. The reversal of 66844992 is 29944866.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3153 + ... + 11984.

Almost surely, 2^66844992 is an apocalyptic number.

It is an amenable number.

66844992 is an abundant number, since it is smaller than the sum of its proper divisors (117717504).

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

66844992 is a wasteful number, since it uses less digits than its factorization.

66844992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15175 (or 15165 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 66844992 is about 8175.8786683757. The cubic root of 66844992 is about 405.8413480599.

The spelling of 66844992 in words is "sixty-six million, eight hundred forty-four thousand, nine hundred ninety-two".