140666516 has 6 divisors (see below), whose sum is σ = 246166410. Its totient is φ = 70333256.

The previous prime is 140666507. The next prime is 140666521. The reversal of 140666516 is 615666041.

140666516 is digitally balanced in base 3, 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 only one way, i.e., 84566416 + 56100100 = 9196^2 + 7490^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17583311 + ... + 17583318.

It is an arithmetic number, because the mean of its divisors is an integer number (41027735).

Almost surely, 2^140666516 is an apocalyptic number.

It is an amenable number.

140666516 is a deficient number, since it is larger than the sum of its proper divisors (105499894).

140666516 is a wasteful number, since it uses less digits than its factorization.

140666516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35166633 (or 35166631 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 140666516 is about 11860.2915647129. The cubic root of 140666516 is about 520.0721251041.

The spelling of 140666516 in words is "one hundred forty million, six hundred sixty-six thousand, five hundred sixteen".