320907 has 8 divisors (see below), whose sum is σ = 438480. Its totient is φ = 208640.

The previous prime is 320899. The next prime is 320911. The reversal of 320907 is 709023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320907 - 2³ = 320899 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320907.

It is not an unprimeable number, because it can be changed into a prime (320927) 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, 1182 + ... + 1427.

It is an arithmetic number, because the mean of its divisors is an integer number (54810).

2³²⁰⁹⁰⁷ is an apocalyptic number.

320907 is a deficient number, since it is larger than the sum of its proper divisors (117573).

320907 is a wasteful number, since it uses less digits than its factorization.

320907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 320907 is about 566.4865399990. The cubic root of 320907 is about 68.4635997489.

It can be divided in two parts, 3 and 20907, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 320907 in words is "three hundred twenty thousand, nine hundred seven".