140997611 has 2 divisors, whose sum is σ = 140997612. Its totient is φ = 140997610.

The previous prime is 140997607. The next prime is 140997617. The reversal of 140997611 is 116799041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140997611 - 2² = 140997607 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (140997617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70498805 + 70498806.

It is an arithmetic number, because the mean of its divisors is an integer number (70498806).

Almost surely, 2^140997611 is an apocalyptic number.

140997611 is a deficient number, since it is larger than the sum of its proper divisors (1).

140997611 is an equidigital number, since it uses as much as digits as its factorization.

140997611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 140997611 is about 11874.2414915648. The cubic root of 140997611 is about 520.4798467640.

The spelling of 140997611 in words is "one hundred forty million, nine hundred ninety-seven thousand, six hundred eleven".