66731024 has 20 divisors (see below), whose sum is σ = 129424380. Its totient is φ = 33331200.

The previous prime is 66731009. The next prime is 66731039. The reversal of 66731024 is 42013766.

66731024 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66731009) and next prime (66731039).

It can be written as a sum of positive squares in 2 ways, for example, as 23697424 + 43033600 = 4868^2 + 6560^2 .

It is a congruent number.

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, 22424 + ... + 25224.

It is an arithmetic number, because the mean of its divisors is an integer number (6471219).

Almost surely, 2^66731024 is an apocalyptic number.

It is an amenable number.

66731024 is a deficient number, since it is larger than the sum of its proper divisors (62693356).

66731024 is a wasteful number, since it uses less digits than its factorization.

66731024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298 (or 4292 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66731024 is about 8168.9059242961. The cubic root of 66731024 is about 405.6105691750.

The spelling of 66731024 in words is "sixty-six million, seven hundred thirty-one thousand, twenty-four".