240990653 has 2 divisors, whose sum is σ = 240990654. Its totient is φ = 240990652.

The previous prime is 240990649. The next prime is 240990677. The reversal of 240990653 is 356099042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240808324 + 182329 = 15518^2 + 427^2 .

It is a cyclic number.

It is not a de Polignac number, because 240990653 - 2² = 240990649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240993653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120495326 + 120495327.

It is an arithmetic number, because the mean of its divisors is an integer number (120495327).

Almost surely, 2^240990653 is an apocalyptic number.

It is an amenable number.

240990653 is a deficient number, since it is larger than the sum of its proper divisors (1).

240990653 is an equidigital number, since it uses as much as digits as its factorization.

240990653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 240990653 is about 15523.8736467417. The cubic root of 240990653 is about 622.3003799651.

The spelling of 240990653 in words is "two hundred forty million, nine hundred ninety thousand, six hundred fifty-three".