66490344 has 48 divisors (see below), whose sum is σ = 180800100. Its totient is φ = 22074624.

The previous prime is 66490339. The next prime is 66490357. The reversal of 66490344 is 44309466.

66490344 is a `hidden beast` number, since 6 + 649 + 0 + 3 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 58706244 + 7784100 = 7662^2 + 2790^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 66490299 and 66490308.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17652 + ... + 21084.

Almost surely, 2^66490344 is an apocalyptic number.

It is an amenable number.

66490344 is an abundant number, since it is smaller than the sum of its proper divisors (114309756).

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

66490344 is a wasteful number, since it uses less digits than its factorization.

66490344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714 (or 3707 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 66490344 is about 8154.1611463105. The cubic root of 66490344 is about 405.1223407264.

The spelling of 66490344 in words is "sixty-six million, four hundred ninety thousand, three hundred forty-four".