140881667 has 2 divisors, whose sum is σ = 140881668. Its totient is φ = 140881666.

The previous prime is 140881661. The next prime is 140881691. The reversal of 140881667 is 766188041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140881667 - 2⁴ = 140881651 is a prime.

It is not a weakly prime, because it can be changed into another prime (140881661) by changing a digit.

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 as a sum of consecutive naturals, namely, 70440833 + 70440834.

It is an arithmetic number, because the mean of its divisors is an integer number (70440834).

Almost surely, 2^140881667 is an apocalyptic number.

140881667 is a deficient number, since it is larger than the sum of its proper divisors (1).

140881667 is an equidigital number, since it uses as much as digits as its factorization.

140881667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 140881667 is about 11869.3583230097. The cubic root of 140881667 is about 520.3371420669.

The spelling of 140881667 in words is "one hundred forty million, eight hundred eighty-one thousand, six hundred sixty-seven".