140628673 has 2 divisors, whose sum is σ = 140628674. Its totient is φ = 140628672.

The previous prime is 140628667. The next prime is 140628689. The reversal of 140628673 is 376826041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90954369 + 49674304 = 9537^2 + 7048^2 .

It is an emirp because it is prime and its reverse (376826041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140628673 is a prime.

It is not a weakly prime, because it can be changed into another prime (140628373) by changing a digit.

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, 70314336 + 70314337.

It is an arithmetic number, because the mean of its divisors is an integer number (70314337).

Almost surely, 2^140628673 is an apocalyptic number.

It is an amenable number.

140628673 is a deficient number, since it is larger than the sum of its proper divisors (1).

140628673 is an equidigital number, since it uses as much as digits as its factorization.

140628673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 140628673 is about 11858.6960918981. The cubic root of 140628673 is about 520.0254832186.

The spelling of 140628673 in words is "one hundred forty million, six hundred twenty-eight thousand, six hundred seventy-three".