540786645 has 64 divisors (see below), whose sum is σ = 1156608000. Its totient is φ = 234197568.

The previous prime is 540786641. The next prime is 540786713. The reversal of 540786645 is 546687045.

540786645 is a `hidden beast` number, since 540 + 7 + 8 + 66 + 45 = 666.

It is not a de Polignac number, because 540786645 - 2² = 540786641 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 Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 540786645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540786641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2896 + ... + 33014.

It is an arithmetic number, because the mean of its divisors is an integer number (18072000).

Almost surely, 2^540786645 is an apocalyptic number.

It is an amenable number.

540786645 is an abundant number, since it is smaller than the sum of its proper divisors (615821355).

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

540786645 is a wasteful number, since it uses less digits than its factorization.

540786645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30159 (or 30153 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 540786645 is about 23254.8198229958. The cubic root of 540786645 is about 814.7205159093.

The spelling of 540786645 in words is "five hundred forty million, seven hundred eighty-six thousand, six hundred forty-five".