921345 has 16 divisors (see below), whose sum is σ = 1486080. Its totient is φ = 487424.

The previous prime is 921331. The next prime is 921353. The reversal of 921345 is 543129.

It is a cyclic number.

It is not a de Polignac number, because 921345 - 2⁹ = 920833 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 921345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3457 + ... + 3713.

It is an arithmetic number, because the mean of its divisors is an integer number (92880).

2⁹²¹³⁴⁵ is an apocalyptic number.

It is an amenable number.

921345 is a deficient number, since it is larger than the sum of its proper divisors (564735).

921345 is a wasteful number, since it uses less digits than its factorization.

921345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504.

The product of its digits is 1080, while the sum is 24.

The square root of 921345 is about 959.8671783117. The cubic root of 921345 is about 97.3062556295.

The spelling of 921345 in words is "nine hundred twenty-one thousand, three hundred forty-five".