660149396 has 6 divisors (see below), whose sum is σ = 1155261450. Its totient is φ = 330074696.

The previous prime is 660149393. The next prime is 660149443. The reversal of 660149396 is 693941066.

It can be written as a sum of positive squares in only one way, i.e., 635745796 + 24403600 = 25214^2 + 4940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660149393) 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 as a sum of consecutive naturals, namely, 82518671 + ... + 82518678.

It is an arithmetic number, because the mean of its divisors is an integer number (192543575).

Almost surely, 2^660149396 is an apocalyptic number.

It is an amenable number.

660149396 is a deficient number, since it is larger than the sum of its proper divisors (495112054).

660149396 is a wasteful number, since it uses less digits than its factorization.

660149396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165037353 (or 165037351 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 660149396 is about 25693.3726085152. The cubic root of 660149396 is about 870.7244575640.

The spelling of 660149396 in words is "six hundred sixty million, one hundred forty-nine thousand, three hundred ninety-six".