540907985 has 8 divisors (see below), whose sum is σ = 649230120. Its totient is φ = 432632704.

The previous prime is 540907973. The next prime is 540907993. The reversal of 540907985 is 589709045.

It can be written as a sum of positive squares in 4 ways, for example, as 117700801 + 423207184 = 10849^2 + 20572^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 540907985 - 2²⁴ = 524130769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23099 + ... + 40191.

It is an arithmetic number, because the mean of its divisors is an integer number (81153765).

Almost surely, 2^540907985 is an apocalyptic number.

It is an amenable number.

540907985 is a deficient number, since it is larger than the sum of its proper divisors (108322135).

540907985 is a wasteful number, since it uses less digits than its factorization.

540907985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23427.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 540907985 is about 23257.4285981920. The cubic root of 540907985 is about 814.7814461581.

The spelling of 540907985 in words is "five hundred forty million, nine hundred seven thousand, nine hundred eighty-five".