807945 has 16 divisors (see below), whose sum is σ = 1315392. Its totient is φ = 423360.

The previous prime is 807943. The next prime is 807949. The reversal of 807945 is 549708.

It is not a de Polignac number, because 807945 - 2¹ = 807943 is a prime.

It is a Curzon number.

807945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (807941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (82212).

2⁸⁰⁷⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

807945 is a deficient number, since it is larger than the sum of its proper divisors (507447).

807945 is a wasteful number, since it uses less digits than its factorization.

807945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 807945 is about 898.8576083007. The cubic root of 807945 is about 93.1380767787.

The spelling of 807945 in words is "eight hundred seven thousand, nine hundred forty-five".