140649701 has 2 divisors, whose sum is σ = 140649702. Its totient is φ = 140649700.

The previous prime is 140649667. The next prime is 140649703. The reversal of 140649701 is 107946041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137499076 + 3150625 = 11726^2 + 1775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140649701 is a prime.

Together with 140649703, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140649703) 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, 70324850 + 70324851.

It is an arithmetic number, because the mean of its divisors is an integer number (70324851).

Almost surely, 2^140649701 is an apocalyptic number.

It is an amenable number.

140649701 is a deficient number, since it is larger than the sum of its proper divisors (1).

140649701 is an equidigital number, since it uses as much as digits as its factorization.

140649701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 140649701 is about 11859.5826655072. The cubic root of 140649701 is about 520.0514014770.

The spelling of 140649701 in words is "one hundred forty million, six hundred forty-nine thousand, seven hundred one".