800657090 has 16 divisors (see below), whose sum is σ = 1441566072. Its totient is φ = 320177664.

The previous prime is 800657089. The next prime is 800657107. The reversal of 800657090 is 90756008.

It can be written as a sum of positive squares in 4 ways, for example, as 460660369 + 339996721 = 21463^2 + 18439^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 800657090.

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, 40562 + ... + 56978.

Almost surely, 2^800657090 is an apocalyptic number.

800657090 is a deficient number, since it is larger than the sum of its proper divisors (640908982).

800657090 is a wasteful number, since it uses less digits than its factorization.

800657090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21301.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 800657090 is about 28295.8846831125. The cubic root of 800657090 is about 928.5718589685.

The spelling of 800657090 in words is "eight hundred million, six hundred fifty-seven thousand, ninety".