340655990 has 16 divisors (see below), whose sum is σ = 639841248. Its totient is φ = 130337856.

The previous prime is 340655989. The next prime is 340655999. The reversal of 340655990 is 99556043.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340655999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740327 + ... + 740786.

It is an arithmetic number, because the mean of its divisors is an integer number (39990078).

Almost surely, 2^340655990 is an apocalyptic number.

340655990 is a deficient number, since it is larger than the sum of its proper divisors (299185258).

340655990 is a wasteful number, since it uses less digits than its factorization.

340655990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481143.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 340655990 is about 18456.8683692548. The cubic root of 340655990 is about 698.4017891829.

The spelling of 340655990 in words is "three hundred forty million, six hundred fifty-five thousand, nine hundred ninety".