66804492 has 24 divisors (see below), whose sum is σ = 165046896. Its totient is φ = 20958208.

The previous prime is 66804467. The next prime is 66804547. The reversal of 66804492 is 29440866.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66804492.

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, 163533 + ... + 163940.

It is an arithmetic number, because the mean of its divisors is an integer number (6876954).

Almost surely, 2^66804492 is an apocalyptic number.

It is an amenable number.

66804492 is an abundant number, since it is smaller than the sum of its proper divisors (98242404).

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

66804492 is a wasteful number, since it uses less digits than its factorization.

66804492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327497 (or 327495 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 66804492 is about 8173.4014950937. The cubic root of 66804492 is about 405.7593678709.

The spelling of 66804492 in words is "sixty-six million, eight hundred four thousand, four hundred ninety-two".