545705847 has 12 divisors (see below), whose sum is σ = 815422920. Its totient is φ = 351258768.

The previous prime is 545705807. The next prime is 545705857. The reversal of 545705847 is 748507545.

It is not a de Polignac number, because 545705847 - 2⁸ = 545705591 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545705807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1045153 + ... + 1045674.

It is an arithmetic number, because the mean of its divisors is an integer number (67951910).

Almost surely, 2^545705847 is an apocalyptic number.

545705847 is a deficient number, since it is larger than the sum of its proper divisors (269717073).

545705847 is a wasteful number, since it uses less digits than its factorization.

545705847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090862 (or 2090859 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 45.

The square root of 545705847 is about 23360.3477499801. The cubic root of 545705847 is about 817.1833995534.

The spelling of 545705847 in words is "five hundred forty-five million, seven hundred five thousand, eight hundred forty-seven".