870804045 has 54 divisors (see below), whose sum is σ = 1557168522. Its totient is φ = 450176064.

The previous prime is 870804041. The next prime is 870804047. The reversal of 870804045 is 540408078.

It can be written as a sum of positive squares in 3 ways, for example, as 238331844 + 632472201 = 15438^2 + 25149^2 .

It is not a de Polignac number, because 870804045 - 2² = 870804041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870804041) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10491574 + ... + 10491656.

Almost surely, 2^870804045 is an apocalyptic number.

It is an amenable number.

870804045 is a deficient number, since it is larger than the sum of its proper divisors (686364477).

870804045 is an equidigital number, since it uses as much as digits as its factorization.

870804045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 870804045 is about 29509.3890990647. The cubic root of 870804045 is about 954.9342699386.

It can be divided in two parts, 87080 and 4045, that added together give a cube (91125 = 45³).

The spelling of 870804045 in words is "eight hundred seventy million, eight hundred four thousand, forty-five".