805145 has 8 divisors (see below), whose sum is σ = 1054080. Its totient is φ = 585520.

The previous prime is 805121. The next prime is 805153. The reversal of 805145 is 541508.

805145 = T₅₆₅ + T₅₆₆ + ... + T₅₆₉.

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

It is not a de Polignac number, because 805145 - 2⁶ = 805081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7265 + ... + 7374.

It is an arithmetic number, because the mean of its divisors is an integer number (131760).

2⁸⁰⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

805145 is a deficient number, since it is larger than the sum of its proper divisors (248935).

805145 is a wasteful number, since it uses less digits than its factorization.

805145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14655.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 805145 is about 897.2987239487. The cubic root of 805145 is about 93.0303596876.

It can be divided in two parts, 80 and 5145, that added together give a palindrome (5225).

The spelling of 805145 in words is "eight hundred five thousand, one hundred forty-five".