140166487 has 8 divisors (see below), whose sum is σ = 142363440. Its totient is φ = 137985600.

The previous prime is 140166473. The next prime is 140166493. The reversal of 140166487 is 784661041.

It is a happy number.

140166487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140166487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140166437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14203 + ... + 21955.

It is an arithmetic number, because the mean of its divisors is an integer number (17795430).

Almost surely, 2^140166487 is an apocalyptic number.

140166487 is a deficient number, since it is larger than the sum of its proper divisors (2196953).

140166487 is a wasteful number, since it uses less digits than its factorization.

140166487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8033.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 140166487 is about 11839.1928356624. The cubic root of 140166487 is about 519.4551578786.

It can be divided in two parts, 14016 and 6487, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 140166487 in words is "one hundred forty million, one hundred sixty-six thousand, four hundred eighty-seven".