66394092 has 12 divisors (see below), whose sum is σ = 154919576. Its totient is φ = 22131360.

The previous prime is 66394091. The next prime is 66394103. The reversal of 66394092 is 29049366.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 66394092.

It is not an unprimeable number, because it can be changed into a prime (66394091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2766409 + ... + 2766432.

Almost surely, 2^66394092 is an apocalyptic number.

It is an amenable number.

66394092 is an abundant number, since it is smaller than the sum of its proper divisors (88525484).

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

66394092 is a wasteful number, since it uses less digits than its factorization.

66394092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532848 (or 5532846 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 66394092 is about 8148.2569915289. The cubic root of 66394092 is about 404.9267601139.

It can be divided in two parts, 6639 and 4092, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 66394092 in words is "sixty-six million, three hundred ninety-four thousand, ninety-two".