800775145 has 16 divisors (see below), whose sum is σ = 982685520. Its totient is φ = 626206464.

The previous prime is 800775139. The next prime is 800775169. The reversal of 800775145 is 541577008.

It can be written as a sum of positive squares in 8 ways, for example, as 58920976 + 741854169 = 7676^2 + 27237^2 .

It is a cyclic number.

It is not a de Polignac number, because 800775145 - 2³ = 800775137 is a prime.

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, 67951 + ... + 78859.

It is an arithmetic number, because the mean of its divisors is an integer number (61417845).

Almost surely, 2^800775145 is an apocalyptic number.

It is an amenable number.

800775145 is a deficient number, since it is larger than the sum of its proper divisors (181910375).

800775145 is a wasteful number, since it uses less digits than its factorization.

800775145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11244.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 800775145 is about 28297.9706869592. The cubic root of 800775145 is about 928.6174953026.

The spelling of 800775145 in words is "eight hundred million, seven hundred seventy-five thousand, one hundred forty-five".