140098657 has 2 divisors, whose sum is σ = 140098658. Its totient is φ = 140098656.

The previous prime is 140098603. The next prime is 140098669. The reversal of 140098657 is 756890041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132503121 + 7595536 = 11511^2 + 2756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140098657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140098757) 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, 70049328 + 70049329.

It is an arithmetic number, because the mean of its divisors is an integer number (70049329).

Almost surely, 2^140098657 is an apocalyptic number.

It is an amenable number.

140098657 is a deficient number, since it is larger than the sum of its proper divisors (1).

140098657 is an equidigital number, since it uses as much as digits as its factorization.

140098657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 140098657 is about 11836.3278511538. The cubic root of 140098657 is about 519.3713519959.

The spelling of 140098657 in words is "one hundred forty million, ninety-eight thousand, six hundred fifty-seven".