801570816 has 170 divisors, whose sum is σ = 2410657832. Its totient is φ = 265420800.

The previous prime is 801570799. The next prime is 801570821. The reversal of 801570816 is 618075108.

801570816 is a `hidden beast` number, since 8 + 0 + 1 + 570 + 81 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5308341 + ... + 5308491.

Almost surely, 2^801570816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 801570816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1205328916).

801570816 is an abundant number, since it is smaller than the sum of its proper divisors (1609087016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

801570816 is an frugal number, since it uses more digits than its factorization.

801570816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 801570816 is about 28312.0259960321. The cubic root of 801570816 is about 928.9249596511.

The spelling of 801570816 in words is "eight hundred one million, five hundred seventy thousand, eight hundred sixteen".