66790148 has 12 divisors (see below), whose sum is σ = 119733852. Its totient is φ = 32580480.

The previous prime is 66790117. The next prime is 66790153. The reversal of 66790148 is 84109766.

66790148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13675204 + 53114944 = 3698^2 + 7288^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 203465 + ... + 203792.

It is an arithmetic number, because the mean of its divisors is an integer number (9977821).

Almost surely, 2^66790148 is an apocalyptic number.

It is an amenable number.

66790148 is a deficient number, since it is larger than the sum of its proper divisors (52943704).

66790148 is a wasteful number, since it uses less digits than its factorization.

66790148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407302 (or 407300 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 66790148 is about 8172.5239675390. The cubic root of 66790148 is about 405.7303247690.

The spelling of 66790148 in words is "sixty-six million, seven hundred ninety thousand, one hundred forty-eight".