540020673 has 12 divisors (see below), whose sum is σ = 780304980. Its totient is φ = 359886816.

The previous prime is 540020671. The next prime is 540020693. The reversal of 540020673 is 376020045.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 531394704 + 8625969 = 23052^2 + 2937^2 .

It is not a de Polignac number, because 540020673 - 2¹ = 540020671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (540020671) 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, 21463 + ... + 39251.

It is an arithmetic number, because the mean of its divisors is an integer number (65025415).

Almost surely, 2^540020673 is an apocalyptic number.

It is an amenable number.

540020673 is a deficient number, since it is larger than the sum of its proper divisors (240284307).

540020673 is a wasteful number, since it uses less digits than its factorization.

540020673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21168 (or 21165 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 540020673 is about 23238.3448851247. The cubic root of 540020673 is about 814.3356765413.

The spelling of 540020673 in words is "five hundred forty million, twenty thousand, six hundred seventy-three".