66078492 has 48 divisors (see below), whose sum is σ = 158723712. Its totient is φ = 21386560.

The previous prime is 66078491. The next prime is 66078497. The reversal of 66078492 is 29487066.

66078492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66078491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67567 + ... + 68537.

It is an arithmetic number, because the mean of its divisors is an integer number (3306744).

Almost surely, 2^66078492 is an apocalyptic number.

It is an amenable number.

66078492 is an abundant number, since it is smaller than the sum of its proper divisors (92645220).

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

66078492 is a wasteful number, since it uses less digits than its factorization.

66078492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 66078492 is about 8128.8678178452. The cubic root of 66078492 is about 404.2841431465.

The spelling of 66078492 in words is "sixty-six million, seventy-eight thousand, four hundred ninety-two".