810006845 has 16 divisors (see below), whose sum is σ = 980427072. Its totient is φ = 642418560.

The previous prime is 810006839. The next prime is 810006863. The reversal of 810006845 is 548600018.

It is not a de Polignac number, because 810006845 - 2¹⁸ = 809744701 is a prime.

It is a super-2 number, since 2×810006845² = 1312222177893708050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 297209 + ... + 299921.

It is an arithmetic number, because the mean of its divisors is an integer number (61276692).

Almost surely, 2^810006845 is an apocalyptic number.

It is an amenable number.

810006845 is a deficient number, since it is larger than the sum of its proper divisors (170420227).

810006845 is a wasteful number, since it uses less digits than its factorization.

810006845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 810006845 is about 28460.6191956535. The cubic root of 810006845 is about 932.1723775820.

The spelling of 810006845 in words is "eight hundred ten million, six thousand, eight hundred forty-five".