320069990 has 16 divisors (see below), whose sum is σ = 576480240. Its totient is φ = 127949280.

The previous prime is 320069983. The next prime is 320069993. The reversal of 320069990 is 99960023.

320069990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320069993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8945 + ... + 26835.

It is an arithmetic number, because the mean of its divisors is an integer number (36030015).

Almost surely, 2^320069990 is an apocalyptic number.

It is a pronic number, being equal to 17890×17891.

320069990 is a deficient number, since it is larger than the sum of its proper divisors (256410250).

320069990 is a wasteful number, since it uses less digits than its factorization.

320069990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19687.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 320069990 is about 17890.4999930131. The cubic root of 320069990 is about 684.0402422090.

The spelling of 320069990 in words is "three hundred twenty million, sixty-nine thousand, nine hundred ninety".