845405814 has 64 divisors (see below), whose sum is σ = 1902942720. Its totient is φ = 248160000.

The previous prime is 845405807. The next prime is 845405831. The reversal of 845405814 is 418504548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407572 + ... + 409640.

It is an arithmetic number, because the mean of its divisors is an integer number (29733480).

Almost surely, 2^845405814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845405814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (951471360).

845405814 is an abundant number, since it is smaller than the sum of its proper divisors (1057536906).

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

845405814 is a wasteful number, since it uses less digits than its factorization.

845405814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277.

The product of its (nonzero) digits is 102400, while the sum is 39.

The square root of 845405814 is about 29075.8630826326. The cubic root of 845405814 is about 945.5585153374.

The spelling of 845405814 in words is "eight hundred forty-five million, four hundred five thousand, eight hundred fourteen".