320753641 has 16 divisors (see below), whose sum is σ = 355924800. Its totient is φ = 287179200.

The previous prime is 320753633. The next prime is 320753651. The reversal of 320753641 is 146357023.

It is a cyclic number.

It is not a de Polignac number, because 320753641 - 2³ = 320753633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320753651) 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 in 15 ways as a sum of consecutive naturals, for example, 81366 + ... + 85216.

It is an arithmetic number, because the mean of its divisors is an integer number (22245300).

Almost surely, 2^320753641 is an apocalyptic number.

It is an amenable number.

320753641 is a deficient number, since it is larger than the sum of its proper divisors (35171159).

320753641 is a wasteful number, since it uses less digits than its factorization.

320753641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 320753641 is about 17909.5963382763. The cubic root of 320753641 is about 684.5269193429.

The spelling of 320753641 in words is "three hundred twenty million, seven hundred fifty-three thousand, six hundred forty-one".