240990677 has 2 divisors, whose sum is σ = 240990678. Its totient is φ = 240990676.

The previous prime is 240990653. The next prime is 240990679. The reversal of 240990677 is 776099042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141110641 + 99880036 = 11879^2 + 9994^2 .

It is a cyclic number.

It is not a de Polignac number, because 240990677 - 2¹⁶ = 240925141 is a prime.

Together with 240990679, 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 (240990679) 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, 120495338 + 120495339.

It is an arithmetic number, because the mean of its divisors is an integer number (120495339).

Almost surely, 2^240990677 is an apocalyptic number.

It is an amenable number.

240990677 is a deficient number, since it is larger than the sum of its proper divisors (1).

240990677 is an equidigital number, since it uses as much as digits as its factorization.

240990677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 240990677 is about 15523.8744197446. The cubic root of 240990677 is about 622.3004006231.

The spelling of 240990677 in words is "two hundred forty million, nine hundred ninety thousand, six hundred seventy-seven".