340987573 has 2 divisors, whose sum is σ = 340987574. Its totient is φ = 340987572.

The previous prime is 340987571. The next prime is 340987607. The reversal of 340987573 is 375789043.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340845444 + 142129 = 18462^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 340987573 - 2¹ = 340987571 is a prime.

Together with 340987571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340987571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170493786 + 170493787.

It is an arithmetic number, because the mean of its divisors is an integer number (170493787).

Almost surely, 2^340987573 is an apocalyptic number.

It is an amenable number.

340987573 is a deficient number, since it is larger than the sum of its proper divisors (1).

340987573 is an equidigital number, since it uses as much as digits as its factorization.

340987573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 340987573 is about 18465.8488296639. The cubic root of 340987573 is about 698.6283159147.

The spelling of 340987573 in words is "three hundred forty million, nine hundred eighty-seven thousand, five hundred seventy-three".